diff --git a/README.md b/README.md
index 599a024..0814795 100644
--- a/README.md
+++ b/README.md
@@ -180,22 +180,22 @@ For multi mode
 // Run channel #0 forward
 relay_chn_run_forward(0);
 // Run all channels forward
-relay_chn_run_forward(RELAY_CHN_ID_ALL);
+relay_chn_run_forward_all();
 
 // Run channel #1 reverse
 relay_chn_run_reverse(1);
 // Run all channels reverse
-relay_chn_run_reverse(RELAY_CHN_ID_ALL);
+relay_chn_run_reverse_all();
 
 // Stop channel #1 
 relay_chn_stop(1);
 // Stop all channels 
-relay_chn_stop(RELAY_CHN_ID_ALL);
+relay_chn_stop_all();
 
 // Flip direction of channel #0
 relay_chn_flip_direction(0);
 // Flip direction of all channels
-relay_chn_flip_direction(RELAY_CHN_ID_ALL);
+relay_chn_flip_direction_all();
 ```
 
 ### 3. Monitor channel state
@@ -227,12 +227,21 @@ For multi mode:
 ```c
 // Get channel #0 state
 relay_chn_state_t state = relay_chn_get_state(0);
+
+// Get states for all channels
+relay_chn_state_t states[CONFIG_RELAY_CHN_COUNT];
+relay_chn_get_states(states);
+
 // Get the string representation of the state of the channel #0
 char *state_str = relay_chn_get_state_str(0);
 
 // Get channel #0 direction
 relay_chn_direction_t direction = relay_chn_get_direction(0);
 
+// Get directions for all channels
+relay_chn_direction_t directions[CONFIG_RELAY_CHN_COUNT];
+relay_chn_get_directions(directions);
+
 /* The listener is same for multi mode */
 ```
 
@@ -261,7 +270,11 @@ uint16_t limit = relay_chn_get_run_limit(0);
 // Set new run limit for specific channels (in seconds)
 relay_chn_set_run_limit(0, 120);          // Set channel #0 to 120 seconds
 relay_chn_set_run_limit(1, 180);          // Set channel #1 to 180 seconds
-relay_chn_set_run_limit(RELAY_CHN_ID_ALL, 90); // Set all channels to 90 seconds
+relay_chn_set_run_limit_all_with(90);     // Set all channels to 90 seconds
+
+// Assuming the CONFIG_RELAY_CHN_COUNT is 4
+uint16_t limits_sec[CONFIG_RELAY_CHN_COUNT] = { 30, 35, 40, 45 };
+relay_chn_set_run_limit_all(limits_sec);   // Set all channels according to the array
 ```
 > [!NOTE]
 > When a channel reaches its run limit, it will automatically stop. The run limit timer is reset whenever the channel starts running in either direction.
@@ -286,7 +299,7 @@ relay_chn_tilt_reverse();
 relay_chn_tilt_stop();
 
 // Set tilting sensitivity (sensitivity as percentage)
-relay_chn_tilt_sensitivity_set(90);
+relay_chn_tilt_set_sensitivity(90);
 
 // Get tilting sensitivity (sensitivty as percentage)
 uint8_t sensitivity = relay_chn_tilt_get_sensitivity();
@@ -299,27 +312,34 @@ For multi mode:
 
 // Start tilting automatically on channel #0
 relay_chn_tilt_auto(0);
-relay_chn_tilt_auto(RELAY_CHN_ID_ALL); // on all channels
+relay_chn_tilt_auto_all(); // on all channels
 
 // Tilt forward on channel #1
 relay_chn_tilt_forward(1);
-relay_chn_tilt_forward(RELAY_CHN_ID_ALL);
+relay_chn_tilt_forward_all();
 
 // Tilt reverse on channel #2
 relay_chn_tilt_reverse(2);
-relay_chn_tilt_reverse(RELAY_CHN_ID_ALL);
+relay_chn_tilt_reverse_all();
 
 // Stop tilting on channel #0
 relay_chn_tilt_stop(0);
-relay_chn_tilt_stop(RELAY_CHN_ID_ALL);
+relay_chn_tilt_stop_all();
 
 // Set tilting sensitivity (sensitivity as percentage) for channel #0
-relay_chn_tilt_sensitivity_set(0, 90);
-relay_chn_tilt_sensitivity_set(RELAY_CHN_ID_ALL, 90);
+relay_chn_tilt_set_sensitivity(0, 90);
+relay_chn_tilt_set_sensitivity_all_with(90);
+
+// Assuming the CONFIG_RELAY_CHN_COUNT is 4
+uint8_t sensitivities[CONFIG_RELAY_CHN_COUNT] = { 90, 85, 80, 75 };
+relay_chn_tilt_set_sensitivity_all(sensitivity);   // Set all channels according to the array
+
+// Get tilt sensitivity for channel #0
+uint8_t sensitivity = relay_chn_tilt_get_sensitivity(0);
 
 // Get tilting sensitivity (sensitivty as percentage)
-uint8_t sensitivity;
-relay_chn_tilt_get_sensitivity(0, &sensitivity, sizeof(sensitivity));
+uint8_t sensitivities[CONFIG_RELAY_CHN_COUNT];
+relay_chn_tilt_get_sensitivity_all(sensitivities);
 ```
 
 ## License
diff --git a/include/relay_chn.h b/include/relay_chn.h
index 6f7ee33..9d7a12f 100644
--- a/include/relay_chn.h
+++ b/include/relay_chn.h
@@ -14,7 +14,6 @@
 #pragma once
 
 #include "esp_err.h"
-#include "relay_chn_defs.h"
 #include "relay_chn_types.h"
 #include "relay_chn_adapter.h"
 
@@ -75,6 +74,18 @@ void relay_chn_unregister_listener(relay_chn_state_listener_t listener);
  */
 relay_chn_state_t relay_chn_get_state(uint8_t chn_id);
 
+/**
+ * @brief Gets the current state of all relay channels.
+ *
+ * This function populates an array with the current states of all configured
+ * relay channels. The caller must ensure the `states` array is large enough
+ * to hold `CONFIG_RELAY_CHN_COUNT` elements.
+ *
+ * @param states Pointer to an array where the states will be stored.
+ * @return ESP_OK on success, ESP_ERR_INVALID_ARG if `states` is NULL.
+ */
+esp_err_t relay_chn_ctl_get_state_all(relay_chn_state_t *states);
+
 /**
  * @brief Get the state string of the specified relay channel.
  *
@@ -100,6 +111,14 @@ char *relay_chn_get_state_str(uint8_t chn_id);
  */
 void relay_chn_run_forward(uint8_t chn_id);
 
+/**
+ * @brief Commands all configured relay channels to run in the forward direction.
+ *
+ * This function iterates through all configured relay channels and issues a command
+ * to each to move in the forward direction.
+ */
+void relay_chn_ctl_run_forward_all(void);
+
 /**
  * @brief Runs the relay channel in reverse.
  *
@@ -109,6 +128,14 @@ void relay_chn_run_forward(uint8_t chn_id);
  */
 void relay_chn_run_reverse(uint8_t chn_id);
 
+/**
+ * @brief Commands all configured relay channels to run in the reverse direction.
+ *
+ * This function iterates through all configured relay channels and issues a command
+ * to each to move in the reverse direction.
+ */
+void relay_chn_ctl_run_reverse_all(void);
+
 /**
  * @brief Stops the relay channel specified by the channel ID.
  *
@@ -120,6 +147,14 @@ void relay_chn_run_reverse(uint8_t chn_id);
  */
 void relay_chn_stop(uint8_t chn_id);
 
+/**
+ * @brief Commands all configured relay channels to stop.
+ *
+ * This function iterates through all configured relay channels and issues a command 
+ * to each to stop any ongoing movement.
+ */
+void relay_chn_ctl_stop_all(void);
+
 /**
  * @brief Flips the direction of the specified relay channel.
  *
@@ -131,6 +166,14 @@ void relay_chn_stop(uint8_t chn_id);
  */
 void relay_chn_flip_direction(uint8_t chn_id);
 
+/**
+ * @brief Flips the logical direction of all configured relay channels.
+ *
+ * This function iterates through all configured relay channels and swaps the 
+ * physical GPIO pins assigned to the forward and reverse directions for each.
+ */
+void relay_chn_ctl_flip_direction_all(void);
+
 /**
  * @brief Get the direction of the specified relay channel.
  *
@@ -143,6 +186,18 @@ void relay_chn_flip_direction(uint8_t chn_id);
  */
 relay_chn_direction_t relay_chn_get_direction(uint8_t chn_id);
 
+/**
+ * @brief Gets the current logical direction of all configured relay channels.
+ *
+ * This function populates an array with the current logical directions of all
+ * configured relay channels. The caller must ensure the `directions` array is
+ * large enough to hold `CONFIG_RELAY_CHN_COUNT` elements.
+ *
+ * @param directions Pointer to an array where the directions will be stored.
+ * @return ESP_OK on success, ESP_ERR_INVALID_ARG if `directions` is NULL.
+ */
+esp_err_t relay_chn_ctl_get_direction_all(relay_chn_direction_t *directions);
+
 #if CONFIG_RELAY_CHN_ENABLE_RUN_LIMIT
 /**
  * @brief Get the run limit for the specified channel
@@ -154,6 +209,18 @@ relay_chn_direction_t relay_chn_get_direction(uint8_t chn_id);
  */
 uint16_t relay_chn_get_run_limit(uint8_t chn_id);
 
+/**
+ * @brief Gets the configured run limits for all configured relay channels.
+ *
+ * This function populates an array with the run limits (in seconds) of all
+ * configured relay channels. The caller must ensure the `limits_sec` array is
+ * large enough to hold `CONFIG_RELAY_CHN_COUNT` elements.
+ *
+ * @param limits_sec Pointer to an array where the run limits will be stored.
+ * @return ESP_OK on success, ESP_ERR_INVALID_ARG if `limits_sec` is NULL.
+ */
+esp_err_t relay_chn_ctl_get_run_limit_all(uint16_t *limits_sec);
+
 /**
  * @brief Set the run limit for the specified channel
  * 
@@ -168,6 +235,31 @@ uint16_t relay_chn_get_run_limit(uint8_t chn_id);
  * @param time_sec The run limit time in seconds.
  */
 void relay_chn_set_run_limit(uint8_t chn_id, uint16_t time_sec);
+
+/**
+ * @brief Sets the run limits for all configured relay channels.
+ *
+ * This function iterates through all configured relay channels and sets their
+ * run limits based on the values provided in the `limits_sec` array. Each value
+ * will be clamped within the configured `RELAY_CHN_RUN_LIMIT_MIN_SEC` and
+ * `RELAY_CHN_RUN_LIMIT_MAX_SEC` boundaries. The new run limits are persisted
+ * in NVS if enabled.
+ *
+ * @param limits_sec Pointer to an array containing the desired run limits in seconds.
+ * @return ESP_OK on success, ESP_ERR_INVALID_ARG if `limits_sec` is NULL.
+ */
+esp_err_t relay_chn_ctl_set_run_limit_all(uint16_t *limits_sec);
+
+/**
+ * @brief Sets a single run limit value for all configured relay channels.
+ *
+ * This function sets the same `limit_sec` value for all configured relay channels.
+ * The value will be clamped within the configured `RELAY_CHN_RUN_LIMIT_MIN_SEC`
+ * and `RELAY_CHN_RUN_LIMIT_MAX_SEC` boundaries.
+ * @param limit_sec The desired run limit in seconds to apply to all channels.
+ * @return ESP_OK on success.
+ */
+esp_err_t relay_chn_ctl_set_run_limit_all_with(uint16_t limit_sec);
 #endif // CONFIG_RELAY_CHN_ENABLE_RUN_LIMIT == 1
 
 
@@ -184,6 +276,14 @@ void relay_chn_set_run_limit(uint8_t chn_id, uint16_t time_sec);
  */
 void relay_chn_tilt_auto(uint8_t chn_id);
 
+/**
+ * @brief Initiates an automatic tilt operation for all configured relay channels.
+ *
+ * This function iterates through all configured relay channels and initiates an
+ * automatic tilt operation for each, based on their individual last run commands.
+ */
+void relay_chn_tilt_auto_all(void);
+
 /**
  * @brief Tilts the specified relay channel forward.
  *
@@ -193,6 +293,11 @@ void relay_chn_tilt_auto(uint8_t chn_id);
  */
 void relay_chn_tilt_forward(uint8_t chn_id);
 
+/**
+ * @brief Initiates a forward tilt operation for all configured relay channels.
+ */
+void relay_chn_tilt_forward_all(void);
+
 /**
  * @brief Tilts the specified relay channel reverse.
  *
@@ -202,6 +307,11 @@ void relay_chn_tilt_forward(uint8_t chn_id);
  */
 void relay_chn_tilt_reverse(uint8_t chn_id);
 
+/**
+ * @brief Initiates a reverse tilt operation for all configured relay channels.
+ */
+void relay_chn_tilt_reverse_all(void);
+
 /**
  * @brief Stops the tilting action on the specified relay channel.
  *
@@ -211,6 +321,11 @@ void relay_chn_tilt_reverse(uint8_t chn_id);
  */
 void relay_chn_tilt_stop(uint8_t chn_id);
 
+/**
+ * @brief Stops any ongoing tilt operation for all configured relay channels.
+ */
+void relay_chn_tilt_stop_all(void);
+
 /**
  * @brief Sets the tilting sensitivity for the specified relay channel.
  *
@@ -222,6 +337,33 @@ void relay_chn_tilt_stop(uint8_t chn_id);
  */
 void relay_chn_tilt_set_sensitivity(uint8_t chn_id, uint8_t sensitivity);
 
+/**
+ * @brief Sets the tilt sensitivity for all configured relay channels.
+ *
+ * This function sets the tilt sensitivity for each channel based on the values
+ * provided in the `sensitivities` array. Each sensitivity value (0-100%)
+ * determines the `move_time_ms` and `pause_time_ms` for tilt operations.
+ * The new sensitivities are persisted in NVS if enabled.
+ *
+ * @param sensitivities Pointer to an array containing the desired tilt sensitivities.
+ * 
+ * @return 
+ *      - ESP_OK: Success
+ *      - ESP_ERR_INVALID_ARG: When sensitivities parameter is NULL
+ */
+esp_err_t relay_chn_tilt_set_sensitivity_all(uint8_t *sensitivities);
+
+/**
+ * @brief Sets a single tilt sensitivity value for all configured relay channels.
+ *
+ * This function sets the same `sensitivity` value for all configured relay channels.
+ * The sensitivity value (0-100%) determines the `move_time_ms` and `pause_time_ms`
+ * for tilt operations. The new sensitivities are persisted in NVS if enabled.
+ *
+ * @param sensitivity The desired tilt sensitivity in percentage (0-100) to apply to all channels.
+ */
+void relay_chn_tilt_set_sensitivity_all_with(uint8_t sensitivity);
+
 /**
  * @brief Gets the tilting sensitivity for the specified relay channel.
  *
@@ -235,7 +377,19 @@ void relay_chn_tilt_set_sensitivity(uint8_t chn_id, uint8_t sensitivity);
  *      - ESP_OK: Success
  *      - ESP_ERR_INVALID_ARG: Invalid argument
  */
-esp_err_t relay_chn_tilt_get_sensitivity(uint8_t chn_id, uint8_t *sensitivity, size_t length);
+uint8_t relay_chn_tilt_get_sensitivity(uint8_t chn_id);
+
+/**
+ * @brief Gets the current tilt sensitivities for all configured relay channels.
+ *
+ * This function populates an array with the current tilt sensitivities (0-100%)
+ * of all configured relay channels. The caller must ensure the `sensitivity` array
+ * is large enough to hold `CONFIG_RELAY_CHN_COUNT` elements.
+ *
+ * @param sensitivity Pointer to an array where the sensitivities will be stored.
+ * @return ESP_OK on success, ESP_ERR_INVALID_ARG if `sensitivity` is NULL.
+ */
+esp_err_t relay_chn_tilt_get_sensitivity_all(uint8_t *sensitivities);
 
 #endif // CONFIG_RELAY_CHN_ENABLE_TILTING
 
diff --git a/include/relay_chn_adapter.h b/include/relay_chn_adapter.h
index 885ab95..5e00d91 100644
--- a/include/relay_chn_adapter.h
+++ b/include/relay_chn_adapter.h
@@ -22,6 +22,19 @@ extern "C" {
  */
 extern relay_chn_state_t relay_chn_ctl_get_state(uint8_t chn_id);
 
+/**
+ * @brief Gets the current state of all relay channels.
+ *
+ * This function populates an array with the current states of all configured
+ * relay channels. The caller must ensure the `states` array is large enough
+ * to hold `CONFIG_RELAY_CHN_COUNT` elements.
+ *
+ * @param states Pointer to an array where the states will be stored.
+ * 
+ * @return ESP_OK on success, ESP_ERR_INVALID_ARG if `states` is NULL.
+ */
+extern esp_err_t relay_chn_ctl_get_state_all(relay_chn_state_t *states);
+
 /**
  * @brief Get string representation of a relay channel's state.
  *
@@ -33,31 +46,62 @@ extern char *relay_chn_ctl_get_state_str(uint8_t chn_id);
 /**
  * @brief Run a relay channel in forward direction.
  *
- * @param[in] chn_id Channel ID to run forward, or RELAY_CHN_ID_ALL for all channels.
+ * @param[in] chn_id Channel ID to run forward.
  */
 extern void relay_chn_ctl_run_forward(uint8_t chn_id);
 
+/**
+ * @brief Commands all configured relay channels to run in the forward direction.
+ *
+ * This function iterates through all configured relay channels and issues a command
+ * to each to move in the forward direction.
+ */
+extern void relay_chn_ctl_run_forward_all(void);
+
 /**
  * @brief Run a relay channel in reverse direction.
  *
- * @param[in] chn_id Channel ID to run reverse, or RELAY_CHN_ID_ALL for all channels.
+ * @param[in] chn_id Channel ID to run reverse.
  */
 extern void relay_chn_ctl_run_reverse(uint8_t chn_id);
 
+/**
+ * @brief Commands all configured relay channels to run in the reverse direction.
+ *
+ * This function iterates through all configured relay channels and issues a command
+ * to each to move in the reverse direction.
+ */
+extern void relay_chn_ctl_run_reverse_all(void);
+
 /**
  * @brief Stop a relay channel.
  *
- * @param[in] chn_id Channel ID to stop, or RELAY_CHN_ID_ALL for all channels.
+ * @param[in] chn_id Channel ID to stop.
  */
 extern void relay_chn_ctl_stop(uint8_t chn_id);
 
+/**
+ * @brief Commands all configured relay channels to stop.
+ *
+ * This function iterates through all configured relay channels and issues a command to each to stop any ongoing movement.
+ */
+extern void relay_chn_ctl_stop_all(void);
+
 /**
  * @brief Flip the running direction of a relay channel.
  *
- * @param[in] chn_id Channel ID to flip direction for, or RELAY_CHN_ID_ALL for all channels.
+ * @param[in] chn_id Channel ID to flip direction for.
  */
 extern void relay_chn_ctl_flip_direction(uint8_t chn_id);
 
+/**
+ * @brief Flips the logical direction of all configured relay channels.
+ *
+ * This function iterates through all configured relay channels and swaps the 
+ * physical GPIO pins assigned to the forward and reverse directions for each.
+ */
+extern void relay_chn_ctl_flip_direction_all(void);
+
 /**
  * @brief Get the current direction of a relay channel.
  *
@@ -66,11 +110,28 @@ extern void relay_chn_ctl_flip_direction(uint8_t chn_id);
  */
 extern relay_chn_direction_t relay_chn_ctl_get_direction(uint8_t chn_id);
 
+/**
+ * @brief Gets the current logical direction of all configured relay channels.
+ *
+ * This function populates an array with the current logical directions of all
+ * configured relay channels. The caller must ensure the `directions` array is
+ * large enough to hold `CONFIG_RELAY_CHN_COUNT` elements.
+ *
+ * @param directions Pointer to an array where the directions will be stored.
+ * @return ESP_OK on success, ESP_ERR_INVALID_ARG if `directions` is NULL.
+ */
+esp_err_t relay_chn_ctl_get_direction_all(relay_chn_direction_t *directions);
+
 static inline relay_chn_state_t relay_chn_get_state(uint8_t chn_id)
 {
     return relay_chn_ctl_get_state(chn_id);
 }
 
+static inline esp_err_t relay_chn_get_state_all(relay_chn_state_t *states)
+{
+    return relay_chn_ctl_get_state_all(states);
+}
+
 static inline char *relay_chn_get_state_str(uint8_t chn_id)
 {
     return relay_chn_ctl_get_state_str(chn_id);
@@ -81,26 +142,51 @@ static inline void relay_chn_run_forward(uint8_t chn_id)
     relay_chn_ctl_run_forward(chn_id);
 }
 
+static inline void relay_chn_run_forward_all(void)
+{
+    relay_chn_ctl_run_forward_all();
+}
+
 static inline void relay_chn_run_reverse(uint8_t chn_id)
 {
     relay_chn_ctl_run_reverse(chn_id);
 }
 
+static inline void relay_chn_run_reverse_all(void)
+{
+    relay_chn_ctl_run_reverse_all();
+}
+
 static inline void relay_chn_stop(uint8_t chn_id)
 {
     relay_chn_ctl_stop(chn_id);
 }
 
+static inline void relay_chn_stop_all(void)
+{
+    relay_chn_ctl_stop_all();
+}
+
 static inline void relay_chn_flip_direction(uint8_t chn_id)
 {
     relay_chn_ctl_flip_direction(chn_id);
 }
 
+static inline void relay_chn_flip_direction_all(void)
+{
+    relay_chn_ctl_flip_direction_all();
+}
+
 static inline relay_chn_direction_t relay_chn_get_direction(uint8_t chn_id)
 {
     return relay_chn_ctl_get_direction(chn_id);
 }
 
+static inline esp_err_t relay_chn_get_direction_all(relay_chn_direction_t *directions)
+{
+    return relay_chn_ctl_get_direction_all(directions);
+}
+
 #if CONFIG_RELAY_CHN_ENABLE_RUN_LIMIT
 /**
  * @brief Get the run limit for the specified channel
@@ -112,6 +198,18 @@ static inline relay_chn_direction_t relay_chn_get_direction(uint8_t chn_id)
  */
 extern uint16_t relay_chn_ctl_get_run_limit(uint8_t chn_id);
 
+/**
+ * @brief Gets the configured run limits for all configured relay channels.
+ *
+ * This function populates an array with the run limits (in seconds) of all
+ * configured relay channels. The caller must ensure the `limits_sec` array is
+ * large enough to hold `CONFIG_RELAY_CHN_COUNT` elements.
+ *
+ * @param limits_sec Pointer to an array where the run limits will be stored.
+ * @return ESP_OK on success, ESP_ERR_INVALID_ARG if `limits_sec` is NULL.
+ */
+esp_err_t relay_chn_ctl_get_run_limit_all(uint16_t *limits_sec);
+
 /**
  * @brief Set the run limit for the specified channel
  *
@@ -120,15 +218,55 @@ extern uint16_t relay_chn_ctl_get_run_limit(uint8_t chn_id);
  */
 extern void relay_chn_ctl_set_run_limit(uint8_t chn_id, uint16_t time_sec);
 
+/**
+ * @brief Sets the run limits for all configured relay channels.
+ *
+ * This function iterates through all configured relay channels and sets their
+ * run limits based on the values provided in the `limits_sec` array. Each value
+ * will be clamped within the configured `RELAY_CHN_RUN_LIMIT_MIN_SEC` and
+ * `RELAY_CHN_RUN_LIMIT_MAX_SEC` boundaries. The new run limits are persisted
+ * in NVS if enabled.
+ *
+ * @param limits_sec Pointer to an array containing the desired run limits in seconds.
+ * @return ESP_OK on success, ESP_ERR_INVALID_ARG if `limits_sec` is NULL.
+ */
+esp_err_t relay_chn_ctl_set_run_limit_all(uint16_t *limits_sec);
+
+/**
+ * @brief Sets a single run limit value for all configured relay channels.
+ *
+ * This function sets the same `limit_sec` value for all configured relay channels.
+ * The value will be clamped within the configured `RELAY_CHN_RUN_LIMIT_MIN_SEC`
+ * and `RELAY_CHN_RUN_LIMIT_MAX_SEC` boundaries.
+ * @param limit_sec The desired run limit in seconds to apply to all channels.
+ * @return ESP_OK on success.
+ */
+esp_err_t relay_chn_ctl_set_run_limit_all_with(uint16_t limit_sec);
+
 static inline uint16_t relay_chn_get_run_limit(uint8_t chn_id)
 {
     return relay_chn_ctl_get_run_limit(chn_id);
 }
 
+static inline esp_err_t relay_chn_get_run_limit_all(uint16_t *limits_sec)
+{
+    return relay_chn_ctl_get_run_limit_all(limits_sec);
+}
+
 static inline void relay_chn_set_run_limit(uint8_t chn_id, uint16_t time_sec)
 {
     relay_chn_ctl_set_run_limit(chn_id, time_sec);
 }
+
+static inline esp_err_t relay_chn_set_run_limit_all(uint16_t *limits_sec)
+{
+    return relay_chn_ctl_set_run_limit_all(limits_sec);
+}
+
+static inline esp_err_t relay_chn_set_run_limit_all_with(uint16_t limit_sec)
+{
+    return relay_chn_ctl_set_run_limit_all_with(limit_sec);
+}
 #endif // CONFIG_RELAY_CHN_ENABLE_RUN_LIMIT == 1
 
 #else
diff --git a/include/relay_chn_defs.h b/include/relay_chn_defs.h
deleted file mode 100644
index b044f8f..0000000
--- a/include/relay_chn_defs.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2025 Kozmotronik Tech
- *
- * SPDX-License-Identifier: MIT
- */
-
- #pragma once
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#if RELAY_CHN_COUNT > 1
-#define RELAY_CHN_ID_ALL RELAY_CHN_COUNT /*!< Special ID to address all channels */
-#endif
-
-#ifdef __cplusplus
-}
-#endif
\ No newline at end of file
diff --git a/include/relay_chn_types.h b/include/relay_chn_types.h
index 8960cc2..8f3a5e6 100644
--- a/include/relay_chn_types.h
+++ b/include/relay_chn_types.h
@@ -7,7 +7,6 @@
 #pragma once
 
 #include <stdint.h>
-#include "relay_chn_defs.h"
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/private_include/relay_chn_core.h b/private_include/relay_chn_core.h
index 62d0e4c..c98bb33 100644
--- a/private_include/relay_chn_core.h
+++ b/private_include/relay_chn_core.h
@@ -9,7 +9,6 @@
 #include "esp_err.h"
 #include "esp_log.h"
 #include "esp_timer.h"
-#include "relay_chn_defs.h"
 #include "relay_chn_types.h"
 #include "relay_chn_priv_types.h"
 
diff --git a/scripts/run_tests.sh b/scripts/run_tests.sh
index 2320339..5cd050e 100755
--- a/scripts/run_tests.sh
+++ b/scripts/run_tests.sh
@@ -10,7 +10,7 @@ if [[ -z "$IDF_PATH" ]]; then
 fi
 
 # ==== 2. Valid Modes and Defaults ====
-valid_test_tags=("core" "tilt" "listener" "all" "relay_chn" "nvs" "run_limit")
+valid_test_tags=("core" "tilt" "listener" "all" "relay_chn" "nvs" "run_limit" "batch")
 arg_tag="all" # Default to 'all' if no tag specified
 arg_clean=false
 arg_log=false
@@ -24,7 +24,7 @@ print_help() {
     echo "This script builds and runs tests for the relay_chn component using QEMU."
     echo ""
     echo "Arguments:"
-    echo "  -t, --tag [relay_chn|core|tilt|listener|nvs|run_limit|all]  Specify which test tag to run."
+    echo "  -t, --tag [relay_chn|core|tilt|listener|nvs|run_limit|batch|all]  Specify which test tag to run."
     echo ""
     echo "  If no tag is specified, it defaults to 'all'."
     echo ""
diff --git a/src/relay_chn_core.c b/src/relay_chn_core.c
index f57969e..f062e1b 100644
--- a/src/relay_chn_core.c
+++ b/src/relay_chn_core.c
@@ -407,7 +407,7 @@ void relay_chn_issue_cmd(relay_chn_ctl_t* chn_ctl, relay_chn_cmd_t cmd)
 #if CONFIG_RELAY_CHN_COUNT > 1
 bool relay_chn_is_channel_id_valid(uint8_t chn_id)
 {
-    bool valid = (chn_id < CONFIG_RELAY_CHN_COUNT) || chn_id == RELAY_CHN_ID_ALL;
+    bool valid = chn_id < CONFIG_RELAY_CHN_COUNT;
     if (!valid) {
         ESP_LOGE(TAG, "Invalid channel ID: %d", chn_id);
     }
diff --git a/src/relay_chn_ctl_multi.c b/src/relay_chn_ctl_multi.c
index 212b941..14bf3a4 100644
--- a/src/relay_chn_ctl_multi.c
+++ b/src/relay_chn_ctl_multi.c
@@ -72,20 +72,33 @@ void relay_chn_ctl_deinit()
 
 relay_chn_state_t relay_chn_ctl_get_state(uint8_t chn_id)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id) || chn_id == RELAY_CHN_ID_ALL) {
-        return RELAY_CHN_STATE_UNDEFINED;
+    return relay_chn_is_channel_id_valid(chn_id) ?
+           chn_ctls[chn_id].state : RELAY_CHN_STATE_UNDEFINED;
+}
+
+esp_err_t relay_chn_ctl_get_state_all(relay_chn_state_t *states)
+{
+    ESP_RETURN_ON_FALSE(states != NULL, ESP_ERR_INVALID_ARG, TAG, "states cannot be NULL");
+
+    for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
+        relay_chn_state_t *dest_state = &states[i];
+        if (dest_state == NULL) {
+            ESP_LOGW(TAG, "get_state_all: States have been copied until channel %d since states[%d] is NULL", i, i);
+            break;
+        }
+        *dest_state = chn_ctls[i].state;
     }
-    return chn_ctls[chn_id].state;
+    return ESP_OK;
 }
 
 char *relay_chn_ctl_get_state_str(uint8_t chn_id)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id) || chn_id == RELAY_CHN_ID_ALL) {
-        return relay_chn_state_str(RELAY_CHN_STATE_UNDEFINED);
-    }
-    return relay_chn_state_str(chn_ctls[chn_id].state);
+    return relay_chn_is_channel_id_valid(chn_id)
+           ? relay_chn_state_str(chn_ctls[chn_id].state)
+           : relay_chn_state_str(RELAY_CHN_STATE_UNDEFINED);
 }
 
+
 static void relay_chn_ctl_issue_cmd_on_all_channels(relay_chn_cmd_t cmd)
 {
     for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
@@ -95,94 +108,142 @@ static void relay_chn_ctl_issue_cmd_on_all_channels(relay_chn_cmd_t cmd)
 
 void relay_chn_ctl_run_forward(uint8_t chn_id)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id)) return;
+    if (relay_chn_is_channel_id_valid(chn_id))
+        relay_chn_issue_cmd(&chn_ctls[chn_id], RELAY_CHN_CMD_FORWARD);
+}
 
-    if (chn_id == RELAY_CHN_ID_ALL) {
-        relay_chn_ctl_issue_cmd_on_all_channels(RELAY_CHN_CMD_FORWARD);
-        return;
-    }
-    relay_chn_issue_cmd(&chn_ctls[chn_id], RELAY_CHN_CMD_FORWARD);
+void relay_chn_ctl_run_forward_all()
+{
+    relay_chn_ctl_issue_cmd_on_all_channels(RELAY_CHN_CMD_FORWARD);
 }
 
 void relay_chn_ctl_run_reverse(uint8_t chn_id)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id)) return;
+    if (relay_chn_is_channel_id_valid(chn_id))
+        relay_chn_issue_cmd(&chn_ctls[chn_id], RELAY_CHN_CMD_REVERSE);
+}
 
-    if (chn_id == RELAY_CHN_ID_ALL) {
-        relay_chn_ctl_issue_cmd_on_all_channels(RELAY_CHN_CMD_REVERSE);
-        return;
-    }
-    relay_chn_issue_cmd(&chn_ctls[chn_id], RELAY_CHN_CMD_REVERSE);
+void relay_chn_ctl_run_reverse_all()
+{
+    relay_chn_ctl_issue_cmd_on_all_channels(RELAY_CHN_CMD_REVERSE);
 }
 
 void relay_chn_ctl_stop(uint8_t chn_id)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id)) return;
+    if (relay_chn_is_channel_id_valid(chn_id))
+        relay_chn_issue_cmd(&chn_ctls[chn_id], RELAY_CHN_CMD_STOP);
+}
 
-    if (chn_id == RELAY_CHN_ID_ALL) {
-        relay_chn_ctl_issue_cmd_on_all_channels(RELAY_CHN_CMD_STOP);
-        return;
-    }
-    relay_chn_issue_cmd(&chn_ctls[chn_id], RELAY_CHN_CMD_STOP);
+void relay_chn_ctl_stop_all()
+{
+    relay_chn_ctl_issue_cmd_on_all_channels(RELAY_CHN_CMD_STOP);
 }
 
 void relay_chn_ctl_flip_direction(uint8_t chn_id)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id)) return;
+    if (relay_chn_is_channel_id_valid(chn_id))
+        relay_chn_issue_cmd(&chn_ctls[chn_id], RELAY_CHN_CMD_FLIP);    
+}
 
-    if (chn_id == RELAY_CHN_ID_ALL) {
-        relay_chn_ctl_issue_cmd_on_all_channels(RELAY_CHN_CMD_FLIP);
-        return;
-    }
-    relay_chn_issue_cmd(&chn_ctls[chn_id], RELAY_CHN_CMD_FLIP);    
+void relay_chn_ctl_flip_direction_all()
+{
+    relay_chn_ctl_issue_cmd_on_all_channels(RELAY_CHN_CMD_FLIP);
 }
 
 relay_chn_direction_t relay_chn_ctl_get_direction(uint8_t chn_id)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id)) {
-        return RELAY_CHN_DIRECTION_DEFAULT;
+    return relay_chn_is_channel_id_valid(chn_id)
+           ? relay_chn_output_get_direction(chn_ctls[chn_id].output)
+           : RELAY_CHN_DIRECTION_DEFAULT;
+}
+
+esp_err_t relay_chn_ctl_get_direction_all(relay_chn_direction_t *directions)
+{
+    ESP_RETURN_ON_FALSE(directions != NULL, ESP_ERR_INVALID_ARG, TAG, "directions cannot be NULL");
+
+    for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
+        relay_chn_direction_t *dest_direction = &directions[i];
+        if (dest_direction == NULL) {
+            ESP_LOGW(TAG, "get_direction_all: Directions have been copied until channel %d since directions[%d] is NULL", i, i);
+            break;
+        }
+        *dest_direction = relay_chn_output_get_direction(chn_ctls[i].output);
     }
-    relay_chn_ctl_t *chn_ctl = &chn_ctls[chn_id];
-    return relay_chn_output_get_direction(chn_ctl->output);
+    return ESP_OK;
 }
 
 #if CONFIG_RELAY_CHN_ENABLE_RUN_LIMIT
 uint16_t relay_chn_ctl_get_run_limit(uint8_t chn_id)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id) || chn_id == RELAY_CHN_ID_ALL) {
-        ESP_LOGE(TAG, "get_run_limit: Invalid channel ID: %d", chn_id);
-        return 0;
-    }
-    return chn_ctls[chn_id].run_limit_sec;
+    return relay_chn_is_channel_id_valid(chn_id) ? chn_ctls[chn_id].run_limit_sec : 0;
 }
 
-void relay_chn_ctl_set_run_limit(uint8_t chn_id, uint16_t time_sec)
+esp_err_t relay_chn_ctl_get_run_limit_all(uint16_t *limits_sec)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id) || chn_id == RELAY_CHN_ID_ALL) {
+    ESP_RETURN_ON_FALSE(limits_sec != NULL, ESP_ERR_INVALID_ARG, TAG, "limits_sec cannot be NULL");
+
+    for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
+        uint16_t *dest_limit_sec = &limits_sec[i];
+        if (dest_limit_sec == NULL) {
+            ESP_LOGW(TAG, "get_run_limit_all: Run limits have been copied until channel %d since limits_sec[%d] is NULL", i, i);
+            break;
+        }
+        *dest_limit_sec = chn_ctls[i].run_limit_sec;
+    }
+    return ESP_OK;
+}
+
+static void relay_chn_ctl_set_run_limit_common(uint8_t chn_id, uint16_t limit_sec)
+{
+    // Check for boundaries
+    if (limit_sec > CONFIG_RELAY_CHN_RUN_LIMIT_MAX_SEC)
+        limit_sec = CONFIG_RELAY_CHN_RUN_LIMIT_MAX_SEC;
+    else if (limit_sec < CONFIG_RELAY_CHN_RUN_LIMIT_MIN_SEC)
+        limit_sec = CONFIG_RELAY_CHN_RUN_LIMIT_MIN_SEC;
+
+    chn_ctls[chn_id].run_limit_sec = limit_sec;
+
+#if CONFIG_RELAY_CHN_ENABLE_NVS
+    relay_chn_nvs_set_run_limit(chn_id, limit_sec);
+#endif
+}
+
+void relay_chn_ctl_set_run_limit(uint8_t chn_id, uint16_t limit_sec)
+{
+    if (!relay_chn_is_channel_id_valid(chn_id)) {
         ESP_LOGE(TAG, "set_run_limit: Invalid channel ID: %d", chn_id);
         return;
     }
-    
-    // Check for boundaries
-    if (time_sec > CONFIG_RELAY_CHN_RUN_LIMIT_MAX_SEC)
-        time_sec = CONFIG_RELAY_CHN_RUN_LIMIT_MAX_SEC;
-    else if (time_sec < CONFIG_RELAY_CHN_RUN_LIMIT_MIN_SEC)
-        time_sec = CONFIG_RELAY_CHN_RUN_LIMIT_MIN_SEC;
+    relay_chn_ctl_set_run_limit_common(chn_id, limit_sec);
+}
 
-    chn_ctls[chn_id].run_limit_sec = time_sec;
+esp_err_t relay_chn_ctl_set_run_limit_all(uint16_t *limits_sec)
+{
+    ESP_RETURN_ON_FALSE(limits_sec != NULL, ESP_ERR_INVALID_ARG, TAG, "limits_sec cannot be NULL");
 
-#if CONFIG_RELAY_CHN_ENABLE_NVS
-    relay_chn_nvs_set_run_limit(chn_id, time_sec);
-#endif
-} 
+    for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
+        uint16_t *src_limit_sec = &limits_sec[i];
+        if (src_limit_sec == NULL) {
+            ESP_LOGW(TAG, "set_run_limit_all: Run limits have been set until channel %d since limits_sec[%d] is NULL", i, i);
+            break;
+        }
+        relay_chn_ctl_set_run_limit_common(i, *src_limit_sec);
+    }
+    return ESP_OK;
+}
+
+esp_err_t relay_chn_ctl_set_run_limit_all_with(uint16_t limit_sec)
+{
+    for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
+        relay_chn_ctl_set_run_limit_common(i, limit_sec);
+    }
+    return ESP_OK;
+}
 #endif
 
 relay_chn_ctl_t *relay_chn_ctl_get(uint8_t chn_id)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id)) {
-        return NULL;
-    }
-    return &chn_ctls[chn_id];
+    return relay_chn_is_channel_id_valid(chn_id) ? &chn_ctls[chn_id] : NULL;
 }
 
 relay_chn_ctl_t *relay_chn_ctl_get_all(void)
diff --git a/src/relay_chn_output.c b/src/relay_chn_output.c
index b7ea44e..b0d2c0f 100644
--- a/src/relay_chn_output.c
+++ b/src/relay_chn_output.c
@@ -6,7 +6,6 @@
 
 #include "esp_check.h"
 #include "esp_log.h"
-#include "relay_chn_defs.h"
 #include "relay_chn_output.h"
 #include "relay_chn_core.h"
 
diff --git a/src/relay_chn_tilt.c b/src/relay_chn_tilt.c
index c48c976..99f2409 100644
--- a/src/relay_chn_tilt.c
+++ b/src/relay_chn_tilt.c
@@ -106,6 +106,7 @@ static void relay_chn_tilt_issue_cmd(relay_chn_tilt_ctl_t *tilt_ctl, relay_chn_t
 
     // Set the command that will be processed
     tilt_ctl->cmd = cmd;
+    ESP_LOGI(TAG, "relay_chn_tilt_issue_cmd: Command-chn: %d-%d", cmd, tilt_ctl->chn_ctl->id); // TODO delete
     switch (tilt_ctl->chn_ctl->state) {
         case RELAY_CHN_STATE_IDLE:
             // Relay channel is free, tilt can be issued immediately
@@ -176,78 +177,67 @@ static void relay_chn_tilt_issue_auto(relay_chn_tilt_ctl_t *tilt_ctl)
     }
 }
 
+
 #if CONFIG_RELAY_CHN_COUNT > 1
-void relay_chn_tilt_auto(uint8_t chn_id)
-{
-    if (!relay_chn_is_channel_id_valid(chn_id)) {
-        return;
-    }
-
-    // Execute for all channels
-    if (chn_id == RELAY_CHN_ID_ALL) {
-        for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
-            relay_chn_tilt_issue_auto(&tilt_ctls[i]);
-        }
-    }
-    // Execute for a single channel
-    else {
-        relay_chn_tilt_ctl_t* tilt_ctl = &tilt_ctls[chn_id];
-        relay_chn_tilt_issue_auto(tilt_ctl);
-    }
-}
-
 static void relay_chn_tilt_issue_cmd_on_all_channels(relay_chn_tilt_cmd_t cmd)
 {
     for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
         relay_chn_tilt_ctl_t* tilt_ctl = &tilt_ctls[i];
+        ESP_LOGI(TAG, "issue_cmd_on_all_channels: Command|chn|ctl.id: %d|%d|%d", cmd, i, tilt_ctl->chn_ctl->id); // TODO delete
         relay_chn_tilt_issue_cmd(tilt_ctl, cmd);
     }
 }
 
+void relay_chn_tilt_auto(uint8_t chn_id)
+{
+    if (relay_chn_is_channel_id_valid(chn_id)) {
+        relay_chn_tilt_issue_auto(&tilt_ctls[chn_id]);
+    }
+}
+
+void relay_chn_tilt_auto_all()
+{
+    for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
+        relay_chn_tilt_issue_auto(&tilt_ctls[i]);
+    }
+}
+
 void relay_chn_tilt_forward(uint8_t chn_id)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id)) {
-        return;
-    }
-    
-    if (chn_id == RELAY_CHN_ID_ALL)
-        relay_chn_tilt_issue_cmd_on_all_channels(RELAY_CHN_TILT_CMD_FORWARD);
-    else {
-        relay_chn_tilt_ctl_t* tilt_ctl = &tilt_ctls[chn_id];
-        relay_chn_tilt_issue_cmd(tilt_ctl, RELAY_CHN_TILT_CMD_FORWARD);
+    if (relay_chn_is_channel_id_valid(chn_id)) {
+        relay_chn_tilt_issue_cmd(&tilt_ctls[chn_id], RELAY_CHN_TILT_CMD_FORWARD);
     }
 }
 
+void relay_chn_tilt_forward_all()
+{
+    relay_chn_tilt_issue_cmd_on_all_channels(RELAY_CHN_TILT_CMD_FORWARD);
+}
+
 void relay_chn_tilt_reverse(uint8_t chn_id)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id)) {
-        return;
+    if (relay_chn_is_channel_id_valid(chn_id)) {
+        relay_chn_tilt_issue_cmd(&tilt_ctls[chn_id], RELAY_CHN_TILT_CMD_REVERSE);
     }
-    
-    if (chn_id == RELAY_CHN_ID_ALL)
+}
+
+void relay_chn_tilt_reverse_all()
+{
     relay_chn_tilt_issue_cmd_on_all_channels(RELAY_CHN_TILT_CMD_REVERSE);
-    else {
-        relay_chn_tilt_ctl_t* tilt_ctl = &tilt_ctls[chn_id];
-        relay_chn_tilt_issue_cmd(tilt_ctl, RELAY_CHN_TILT_CMD_REVERSE);
-    }
 }
 
 void relay_chn_tilt_stop(uint8_t chn_id)
 {
     if (!relay_chn_is_channel_id_valid(chn_id)) {
-        return;
-    }
-    
-    if (chn_id == RELAY_CHN_ID_ALL) {
-        for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
-            relay_chn_tilt_dispatch_cmd(&tilt_ctls[i], RELAY_CHN_TILT_CMD_STOP);
-        }
-    }
-    else {
         relay_chn_tilt_dispatch_cmd(&tilt_ctls[chn_id], RELAY_CHN_TILT_CMD_STOP);
     }
 }
 
+void relay_chn_tilt_stop_all()
+{
+    relay_chn_tilt_issue_cmd_on_all_channels(RELAY_CHN_TILT_CMD_STOP);
+}
+
 #else // CONFIG_RELAY_CHN_COUNT > 1
 
 void relay_chn_tilt_auto()
@@ -317,45 +307,61 @@ static void relay_chn_tilt_compute_set_sensitivity(relay_chn_tilt_ctl_t *tilt_ct
 #if CONFIG_RELAY_CHN_COUNT > 1
 void relay_chn_tilt_set_sensitivity(uint8_t chn_id, uint8_t sensitivity)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id)) {
-        return;
-    }
-    
-    if (chn_id == RELAY_CHN_ID_ALL) {
-        for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
-            relay_chn_tilt_compute_set_sensitivity(&tilt_ctls[i], sensitivity);
-        }
-    }
-    else {
+    if (relay_chn_is_channel_id_valid(chn_id)) {
         relay_chn_tilt_compute_set_sensitivity(&tilt_ctls[chn_id], sensitivity);
-    }
-    
+        
 #if CONFIG_RELAY_CHN_ENABLE_NVS
-    relay_chn_nvs_set_tilt_sensitivity(chn_id, sensitivity);
+        relay_chn_nvs_set_tilt_sensitivity(chn_id, sensitivity);
 #endif // CONFIG_RELAY_CHN_ENABLE_NVS
+    }
 }
 
-esp_err_t relay_chn_tilt_get_sensitivity(uint8_t chn_id, uint8_t *sensitivity, size_t length)
+esp_err_t relay_chn_tilt_set_sensitivity_all(uint8_t *sensitivities)
 {
-    if (!relay_chn_is_channel_id_valid(chn_id)) {
-        return ESP_ERR_INVALID_ARG;
-    }
-    if (sensitivity == NULL) {
-        ESP_LOGD(TAG, "relay_chn_tilt_get_sensitivity: sensitivity is NULL");
-        return ESP_ERR_INVALID_ARG;
-    }
-    if (chn_id == RELAY_CHN_ID_ALL) {
-        if (length < CONFIG_RELAY_CHN_COUNT) {
-            ESP_LOGD(TAG, "relay_chn_tilt_get_sensitivity: length is too short to store all sensitivity values");
-            return ESP_ERR_INVALID_ARG;
+    ESP_RETURN_ON_FALSE(sensitivities != NULL, ESP_ERR_INVALID_ARG, TAG, "set_sensitivity_all: sensitivities is NULL");
+    
+    for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
+        uint8_t *src_sensitivity = &sensitivities[i];
+        if (src_sensitivity == NULL) {
+            ESP_LOGW(TAG, "set_sensitivity_all: Run limits have been set until channel %d since sensitivities[%d] is NULL", i, i);
+            break;
         }
+        relay_chn_tilt_compute_set_sensitivity(&tilt_ctls[i], *src_sensitivity);
+#if CONFIG_RELAY_CHN_ENABLE_NVS
+        relay_chn_nvs_set_tilt_sensitivity(i, *src_sensitivity);
+#endif // CONFIG_RELAY_CHN_ENABLE_NVS
+    }
+    return ESP_OK;
+}
 
-        for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
-            sensitivity[i] = tilt_ctls[i].tilt_timing.sensitivity;
-        }
-        return ESP_OK;
+void relay_chn_tilt_set_sensitivity_all_with(uint8_t sensitivity)
+{
+    for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
+        relay_chn_tilt_compute_set_sensitivity(&tilt_ctls[i], sensitivity);
+#if CONFIG_RELAY_CHN_ENABLE_NVS
+        relay_chn_nvs_set_tilt_sensitivity(i, sensitivity);
+#endif // CONFIG_RELAY_CHN_ENABLE_NVS
+    }
+}
+
+uint8_t relay_chn_tilt_get_sensitivity(uint8_t chn_id)
+{
+    return relay_chn_is_channel_id_valid(chn_id) ?
+           tilt_ctls[chn_id].tilt_timing.sensitivity : 0;
+}
+
+esp_err_t relay_chn_tilt_get_sensitivity_all(uint8_t *sensitivities)
+{
+    ESP_RETURN_ON_FALSE(sensitivities != NULL, ESP_ERR_INVALID_ARG, TAG, "get_sensitivity_all: sensitivities is NULL");
+    
+    for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
+        uint8_t *dest_sensitivity = &sensitivities[i];
+        if (dest_sensitivity == NULL) {
+            ESP_LOGW(TAG, "get_sensitivity_all: Sensitivites have been copied until channel %d since sensitivities[%d] is NULL", i, i);
+            break;
+        }
+        *dest_sensitivity = tilt_ctls[i].tilt_timing.sensitivity;
     }
-    *sensitivity = tilt_ctls[chn_id].tilt_timing.sensitivity;
     return ESP_OK;
 }
 
@@ -547,6 +553,7 @@ static void relay_chn_tilt_execute_pause(relay_chn_tilt_ctl_t *tilt_ctl)
 esp_err_t relay_chn_tilt_dispatch_cmd(relay_chn_tilt_ctl_t *tilt_ctl, relay_chn_tilt_cmd_t cmd)
 {
     ESP_LOGD(TAG, "relay_chn_tilt_dispatch_cmd: Command: %d", cmd);
+    ESP_LOGI(TAG, "tilt_dispatch_cmd: Command-chn: %d-%d", cmd, tilt_ctl->chn_ctl->id); // TODO delete
 
     switch(cmd) {
         case RELAY_CHN_TILT_CMD_STOP:
@@ -666,8 +673,9 @@ esp_err_t relay_chn_tilt_init(relay_chn_ctl_t *chn_ctls)
     
 #if CONFIG_RELAY_CHN_COUNT > 1
     for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
+        esp_err_t ret;
 #if CONFIG_RELAY_CHN_ENABLE_NVS
-        esp_err_t ret = relay_chn_tilt_load_sensitivity(i, &sensitivity);
+        ret = relay_chn_tilt_load_sensitivity(i, &sensitivity);
         ESP_RETURN_ON_ERROR(ret, TAG, "Failed to load tilt sensitivity for channel %d", i);
         ret = relay_chn_tilt_load_tilt_count(i, &tilt_count);
         ESP_RETURN_ON_ERROR(ret, TAG, "Failed to load tilt count for channel %d", i);
diff --git a/test_apps/main/test_common.c b/test_apps/main/test_common.c
index 3db95de..21986a4 100644
--- a/test_apps/main/test_common.c
+++ b/test_apps/main/test_common.c
@@ -39,7 +39,7 @@ const uint8_t gpio_count = sizeof(gpio_map) / sizeof(gpio_map[0]);
 void reset_channels_to_idle_state()
 {
 #if CONFIG_RELAY_CHN_COUNT > 1
-    relay_chn_stop(RELAY_CHN_ID_ALL);
+    relay_chn_stop_all();
     vTaskDelay(pdMS_TO_TICKS(opposite_inertia_ms + test_delay_margin_ms));
     for (int i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
         TEST_ASSERT_EQUAL(RELAY_CHN_STATE_IDLE, relay_chn_get_state(i));
diff --git a/test_apps/main/test_relay_chn_core_multi.c b/test_apps/main/test_relay_chn_core_multi.c
index f684535..b33ab9a 100644
--- a/test_apps/main/test_relay_chn_core_multi.c
+++ b/test_apps/main/test_relay_chn_core_multi.c
@@ -70,11 +70,10 @@ TEST_CASE("Relay channels run reverse and update state", "[relay_chn][core]") {
 }
 
 
-// ### Broadcast Command (RELAY_CHN_ID_ALL) Tests
-
-TEST_CASE("run_forward with ID_ALL sets all channels to FORWARD", "[relay_chn][core][id_all]")
+// ### Batch Control Tests
+TEST_CASE("run_forward_all sets all channels to FORWARD", "[relay_chn][core][batch]")
 {
-    relay_chn_run_forward(RELAY_CHN_ID_ALL);
+    relay_chn_run_forward_all();
     vTaskDelay(pdMS_TO_TICKS(test_delay_margin_ms));
 
     for (uint8_t i = 0; i < relay_chn_count; i++) {
@@ -82,9 +81,9 @@ TEST_CASE("run_forward with ID_ALL sets all channels to FORWARD", "[relay_chn][c
     }
 }
 
-TEST_CASE("run_reverse with ID_ALL sets all channels to REVERSE", "[relay_chn][core][id_all]")
+TEST_CASE("run_reverse_all sets all channels to REVERSE", "[relay_chn][core][batch]")
 {
-    relay_chn_run_reverse(RELAY_CHN_ID_ALL);
+    relay_chn_run_reverse_all();
     vTaskDelay(pdMS_TO_TICKS(test_delay_margin_ms));
 
     for (uint8_t i = 0; i < relay_chn_count; i++) {
@@ -92,14 +91,14 @@ TEST_CASE("run_reverse with ID_ALL sets all channels to REVERSE", "[relay_chn][c
     }
 }
 
-TEST_CASE("stop with ID_ALL stops all running channels", "[relay_chn][core][id_all]")
+TEST_CASE("stop_all stops all running channels", "[relay_chn][core][batch]")
 {
     // 1. Start all channels forward to ensure they are in a known running state
-    relay_chn_run_forward(RELAY_CHN_ID_ALL);
+    relay_chn_run_forward_all();
     vTaskDelay(pdMS_TO_TICKS(test_delay_margin_ms));
 
-    // 2. Stop all channels using the broadcast command
-    relay_chn_stop(RELAY_CHN_ID_ALL);
+    // 2. Stop all channels
+    relay_chn_stop_all();
     vTaskDelay(pdMS_TO_TICKS(opposite_inertia_ms + test_delay_margin_ms));
 
     // 3. Verify all channels have transitioned to the FREE state
@@ -138,7 +137,7 @@ TEST_CASE("Get state returns UNDEFINED when id is invalid", "[relay_chn][core]")
         TEST_ASSERT_EQUAL(RELAY_CHN_STATE_UNDEFINED, relay_chn_get_state(invalid_id));
     }
     // Test for running states also
-    relay_chn_run_forward(RELAY_CHN_ID_ALL);
+    relay_chn_run_forward_all();
     vTaskDelay(pdMS_TO_TICKS(test_delay_margin_ms));
     for (uint8_t i = 0; i < relay_chn_count; i++) {
         int invalid_id = relay_chn_count * 2 + i;
@@ -153,7 +152,7 @@ TEST_CASE("Get state string returns UNKNOWN when id is invalid", "[relay_chn][co
         TEST_ASSERT_EQUAL_STRING("UNKNOWN", relay_chn_get_state_str(invalid_id));
     }
     // Test for running states also
-    relay_chn_run_forward(RELAY_CHN_ID_ALL);
+    relay_chn_run_forward_all();
     vTaskDelay(pdMS_TO_TICKS(test_delay_margin_ms));
     for (uint8_t i = 0; i < relay_chn_count; i++) {
         int invalid_id = relay_chn_count * 2 + i;
@@ -295,10 +294,10 @@ TEST_CASE("Single channel direction can be flipped", "[relay_chn][core][directio
     TEST_ASSERT_EQUAL(RELAY_CHN_DIRECTION_DEFAULT, relay_chn_get_direction(ch));
 }
 
-TEST_CASE("All channels direction can be flipped simultaneously", "[relay_chn][core][direction][id_all]")
+TEST_CASE("All channels direction can be flipped simultaneously", "[relay_chn][core][direction][batch]")
 {
     // 1. Flip all channels
-    relay_chn_flip_direction(RELAY_CHN_ID_ALL);
+    relay_chn_flip_direction_all();
     vTaskDelay(pdMS_TO_TICKS(opposite_inertia_ms + test_delay_margin_ms));
 
     // 2. Verify all channels are flipped
@@ -307,7 +306,7 @@ TEST_CASE("All channels direction can be flipped simultaneously", "[relay_chn][c
     }
 
     // 3. Flip all back
-    relay_chn_flip_direction(RELAY_CHN_ID_ALL);
+    relay_chn_flip_direction_all();
     vTaskDelay(pdMS_TO_TICKS(opposite_inertia_ms + test_delay_margin_ms));
 
     // 4. Verify all channels are back to default
@@ -380,7 +379,7 @@ TEST_CASE("Test run limit stops channel after timeout", "[relay_chn][run_limit]"
         relay_chn_set_run_limit(i, TEST_SHORT_RUN_LIMIT_SEC);
     }
 
-    relay_chn_run_forward(RELAY_CHN_ID_ALL);
+    relay_chn_run_forward_all();
 
     for (uint8_t i = 0; i < CONFIG_RELAY_CHN_COUNT; i++) {
         // Check running forward
@@ -407,7 +406,7 @@ TEST_CASE("Test run limit reset on direction change and time out finally", "[rel
     vTaskDelay(1000 / portTICK_PERIOD_MS); // Wait 1 second
     
     // Change direction before timeout
-    relay_chn_run_reverse(RELAY_CHN_ID_ALL);
+    relay_chn_run_reverse_all();
     
     // Wait for the inertia period (after which the reverse command will be dispatched)
     vTaskDelay(pdMS_TO_TICKS(opposite_inertia_ms + test_delay_margin_ms));
diff --git a/test_apps/main/test_relay_chn_tilt_multi.c b/test_apps/main/test_relay_chn_tilt_multi.c
index 2f17e47..bc4aa32 100644
--- a/test_apps/main/test_relay_chn_tilt_multi.c
+++ b/test_apps/main/test_relay_chn_tilt_multi.c
@@ -162,7 +162,7 @@ TEST_CASE("Tilt Forward to Run Reverse transition without inertia", "[relay_chn]
 }
 
 // TEST_CASE: Test stopping from a tilt state (no inertia for stop command itself)
-// Scenario: RELAY_CHN_STATE_TILT_FORWARD -> (relay_chn_stop) -> RELAY_CHN_STATE_STOPPED -> (inertia) -> RELAY_CHN_STATE_IDLE
+// Scenario: RELAY_CHN_STATE_TILT_FORWARD -> (relay_chn_tilt_stop) -> RELAY_CHN_STATE_STOPPED -> (inertia) -> RELAY_CHN_STATE_IDLE
 TEST_CASE("Tilt to Stop transition without immediate inertia for stop", "[relay_chn][tilt][inertia]") {
     uint8_t ch = 0;
 
@@ -173,15 +173,15 @@ TEST_CASE("Tilt to Stop transition without immediate inertia for stop", "[relay_
     TEST_ASSERT_EQUAL(RELAY_CHN_STATE_TILT_FORWARD, relay_chn_get_state(ch));
 
     // 2. Issue stop command
-    relay_chn_stop(ch);
+    relay_chn_tilt_stop(ch);
     // Stop command should apply immediately, setting state to FREE since last state was tilt.
     vTaskDelay(pdMS_TO_TICKS(test_delay_margin_ms));
     TEST_ASSERT_EQUAL(RELAY_CHN_STATE_IDLE, relay_chn_get_state(ch));
 }
 
-// ### Tilt Broadcast Command (RELAY_CHN_ID_ALL) Tests
+// ### Batch Tilt Control Tests
 
-TEST_CASE("tilt_forward with ID_ALL sets all channels to TILT_FORWARD", "[relay_chn][tilt][id_all]")
+TEST_CASE("tilt_forward_all sets all channels to TILT_FORWARD", "[relay_chn][tilt][batch]")
 {
     // 1. Prepare all channels.
     for (uint8_t i = 0; i < relay_chn_count; i++) {
@@ -189,16 +189,17 @@ TEST_CASE("tilt_forward with ID_ALL sets all channels to TILT_FORWARD", "[relay_
     }
 
     // 2. Issue tilt forward to all channels
-    relay_chn_tilt_forward(RELAY_CHN_ID_ALL);
+    relay_chn_tilt_forward_all();
     vTaskDelay(pdMS_TO_TICKS(test_delay_margin_ms)); // Tilt from FREE doesn't have stop-inertia
 
     // 3. Verify all channels are tilting forward
     for (uint8_t i = 0; i < relay_chn_count; i++) {
+        ESP_LOGI(TEST_TAG, "Checking channel %d", i);
         TEST_ASSERT_EQUAL(RELAY_CHN_STATE_TILT_FORWARD, relay_chn_get_state(i));
     }
 }
 
-TEST_CASE("tilt_reverse with ID_ALL sets all channels to TILT_REVERSE", "[relay_chn][tilt][id_all]")
+TEST_CASE("tilt_reverse_all sets all channels to TILT_REVERSE", "[relay_chn][tilt][batch]")
 {
     // 1. Prepare all channels.
     for (uint8_t i = 0; i < relay_chn_count; i++) {
@@ -206,7 +207,7 @@ TEST_CASE("tilt_reverse with ID_ALL sets all channels to TILT_REVERSE", "[relay_
     }
 
     // 2. Issue tilt reverse to all channels
-    relay_chn_tilt_reverse(RELAY_CHN_ID_ALL);
+    relay_chn_tilt_reverse_all();
     vTaskDelay(pdMS_TO_TICKS(test_delay_margin_ms));
 
     // 3. Verify all channels are tilting reverse
@@ -215,26 +216,27 @@ TEST_CASE("tilt_reverse with ID_ALL sets all channels to TILT_REVERSE", "[relay_
     }
 }
 
-TEST_CASE("tilt_stop with ID_ALL stops all tilting channels", "[relay_chn][tilt][id_all]")
+TEST_CASE("tilt_stop_all stops all tilting channels", "[relay_chn][tilt][batch]")
 {
     // 1. Prepare and start all channels tilting forward
     for (uint8_t i = 0; i < relay_chn_count; i++) {
         prepare_channel_for_tilt(i, RELAY_CHN_CMD_REVERSE);
     }
-    relay_chn_tilt_forward(RELAY_CHN_ID_ALL);
+    relay_chn_tilt_forward_all();
     vTaskDelay(pdMS_TO_TICKS(test_delay_margin_ms));
 
     // 2. Stop tilting on all channels
-    relay_chn_tilt_stop(RELAY_CHN_ID_ALL);
+    relay_chn_tilt_stop_all();
     vTaskDelay(pdMS_TO_TICKS(opposite_inertia_ms + test_delay_margin_ms));
 
     // 3. Verify all channels are free
     for (uint8_t i = 0; i < relay_chn_count; i++) {
+        ESP_LOGI(TEST_TAG, "Checking channel %d", i);
         TEST_ASSERT_EQUAL(RELAY_CHN_STATE_IDLE, relay_chn_get_state(i));
     }
 }
 
-TEST_CASE("tilt_auto with ID_ALL tilts channels based on last run direction", "[relay_chn][tilt][id_all]")
+TEST_CASE("tilt_auto_all tilts channels based on last run direction", "[relay_chn][tilt][batch]")
 {
     // This test requires at least 2 channels to demonstrate different behaviors
     TEST_ASSERT_GREATER_OR_EQUAL_MESSAGE(2, relay_chn_count, "Test requires at least 2 channels");
@@ -244,7 +246,7 @@ TEST_CASE("tilt_auto with ID_ALL tilts channels based on last run direction", "[
     prepare_channel_for_tilt(1, RELAY_CHN_CMD_REVERSE);
 
     // 2. Issue auto tilt command to all channels
-    relay_chn_tilt_auto(RELAY_CHN_ID_ALL);
+    relay_chn_tilt_auto_all();
     vTaskDelay(pdMS_TO_TICKS(test_delay_margin_ms)); // Tilt from FREE state is dispatched immediately
 
     // 3. Verify channel 0 tilts forward (last run was forward) and channel 1 tilts reverse (last run was reverse)
@@ -273,26 +275,23 @@ TEST_CASE("relay_chn_tilt_auto chooses correct direction", "[relay_chn][tilt][au
 // Test sensitivity set/get
 TEST_CASE("relay_chn_tilt_set_sensitivity and get", "[relay_chn][tilt][sensitivity]") {
     uint8_t ch = 0;
-    uint8_t val = 0;
     relay_chn_tilt_set_sensitivity(ch, 0);
-    TEST_ESP_OK(relay_chn_tilt_get_sensitivity(ch, &val, 1));
-    TEST_ASSERT_EQUAL_UINT8(0, val);
+    TEST_ASSERT_EQUAL_UINT8(0, relay_chn_tilt_get_sensitivity(ch));
 
     relay_chn_tilt_set_sensitivity(ch, 50);
-    TEST_ESP_OK(relay_chn_tilt_get_sensitivity(ch, &val, 1));
-    TEST_ASSERT_EQUAL_UINT8(50, val);
+    TEST_ASSERT_EQUAL_UINT8(50, relay_chn_tilt_get_sensitivity(ch));
 
     relay_chn_tilt_set_sensitivity(ch, 100);
-    TEST_ESP_OK(relay_chn_tilt_get_sensitivity(ch, &val, 1));
-    TEST_ASSERT_EQUAL_UINT8(100, val);
-
+    TEST_ASSERT_EQUAL_UINT8(100, relay_chn_tilt_get_sensitivity(ch));
     // Set all channels
-    relay_chn_tilt_set_sensitivity(RELAY_CHN_ID_ALL, 42);
+    relay_chn_tilt_set_sensitivity_all_with(42);
+    
     uint8_t vals[CONFIG_RELAY_CHN_COUNT] = {0};
-    TEST_ESP_OK(relay_chn_tilt_get_sensitivity(RELAY_CHN_ID_ALL, vals, relay_chn_count));
-    for (int i = 0; i < relay_chn_count; ++i) {
-        TEST_ASSERT_EQUAL_UINT8(42, vals[i]);
-    }
+    uint8_t expect[CONFIG_RELAY_CHN_COUNT];
+    memset(expect, 42, CONFIG_RELAY_CHN_COUNT);
+    
+    TEST_ESP_OK(relay_chn_tilt_get_sensitivity_all(vals));
+    TEST_ASSERT_EQUAL_UINT8_ARRAY(expect, vals, CONFIG_RELAY_CHN_COUNT);
 }
 
 // Test tilt counter logic: forward x3, reverse x3, extra reverse fails