diff --git a/main/ate0005.c b/main/ate0005.c
index adedadb..fec117c 100644
--- a/main/ate0005.c
+++ b/main/ate0005.c
@@ -186,6 +186,8 @@ static void _zh_pcf8574_init(void)
     };
     i2c_new_master_bus(&i2c_bus_config, &_i2c_bus_handle);
     zh_pcf8574_init_config_t config = ZH_PCF8574_INIT_CONFIG_DEFAULT();
+    config.task_priority = EXPANDER_TASK_PRIORITY;
+    config.stack_size = EXPANDER_TASK_STACK_SIZE;
     config.i2c_handle = _i2c_bus_handle;
     config.i2c_address = LCD_I2C_ADDRESS;
     zh_pcf8574_init(&config, &_lcd_handle);
@@ -233,7 +235,7 @@ static void _zh_encoder_event_handler(void *arg, esp_event_base_t event_base, in
     {
     case ZH_BUTTON_EVENT:
         zh_encoder_button_event_on_isr_t *button_event = event_data;
-        if (button_event->button_status == BUTTON_PRESSED)
+        if (button_event->button_status == ENCODER_BUTTON_PRESSED)
         {
             esp_timer_start_once(_inclinometer_reset_timer_handle, 2000000);
             _is_reset_mode = true;
diff --git a/main/ate0005.h b/main/ate0005.h
index 9758eb9..9cd2fbe 100644
--- a/main/ate0005.h
+++ b/main/ate0005.h
@@ -27,12 +27,20 @@
 #define B_TACHOMETER_TASK_STACK_SIZE configMINIMAL_STACK_SIZE + 512
 #define ENCODER_TASK_PRIORITY tskIDLE_PRIORITY + 4
 #define ENCODER_TASK_STACK_SIZE configMINIMAL_STACK_SIZE
+#define EXPANDER_TASK_PRIORITY tskIDLE_PRIORITY + 4
+#define EXPANDER_TASK_STACK_SIZE configMINIMAL_STACK_SIZE
 
-#define HIGH true
-#define LOW false
+#define TRIAC_ON true
+#define TRIAC_OFF false
 
-#define BUTTON_RELEASED HIGH
-#define BUTTON_PRESSED LOW
+#define ENCODER_BUTTON_RELEASED true
+#define ENCODER_BUTTON_PRESSED false
+
+#define LED_OFF ZH_PCF8574_GPIO_LOW
+#define LED_ON ZH_PCF8574_GPIO_HIGH
+
+#define RELAY_OFF ZH_PCF8574_GPIO_LOW
+#define RELAY_ON ZH_PCF8574_GPIO_HIGH
 
 #define MODE_ANGLE_ANGLE 0
 #define MAIN_MENU_ANGLE_ANGLE_NAME "ANGLE/ANGLE"