diff --git a/BOM_ATE0003.000.001.xlsx b/BOM_ATE0003.000.001.xlsx
index ed98d18..67d72e4 100644
Binary files a/BOM_ATE0003.000.001.xlsx and b/BOM_ATE0003.000.001.xlsx differ
diff --git a/src/ate0003.c b/src/ate0003.c
index 08c746b..d989412 100644
--- a/src/ate0003.c
+++ b/src/ate0003.c
@@ -6,7 +6,7 @@
 #include "zh_avr_ac_dimmer.h"
 #include "ate0003.h"
 
-#define DEBUG
+// #define DEBUG
 
 #define SYSTEM_SETUP_STACK 170
 #define ENCODER_STACK 166
@@ -158,12 +158,13 @@ void system_setup_task(void *pvParameters)
     zh_avr_encoder_set(&component_encoder_handle, 0);
     //** AC dimmer init **/
     zh_avr_ac_dimmer_init_config_t ac_dimmer_init_config = ZH_AVR_AC_DIMMER_INIT_CONFIG_DEFAULT();
-    ac_dimmer_init_config.ac_dimmer_frequency = ZH_60HZ;
+    ac_dimmer_init_config.ac_dimmer_frequency = ZH_400HZ;
     ac_dimmer_init_config.zero_cross_port = AVR_PORTD;
     ac_dimmer_init_config.zero_cross_gpio = PORTD3;
     ac_dimmer_init_config.triac_port = AVR_PORTD;
     ac_dimmer_init_config.triac_gpio = PORTD4;
     zh_avr_ac_dimmer_init(&ac_dimmer_init_config);
+    zh_avr_ac_dimmer_set(100);
     is_initialized = true;
 #ifdef DEBUG
     printf("System Setup Task Remaining Stack Size %d.\n", uxTaskGetStackHighWaterMark(NULL));
@@ -224,6 +225,9 @@ void zh_avr_pcf8574_event_handler(zh_avr_pcf8574_event_on_isr_t *event)
             zh_avr_pcf8574_write_gpio(&led1_handle, NUM1_LED_BLUE, LED_OFF);
             zh_avr_pcf8574_write_gpio(&led1_handle, NUM1_LED_GREEN, LED_ON);
             zh_avr_pcf8574_write_gpio(&relay_handle, L1_RELAY, RELAY_ON);
+            zh_avr_pcf8574_write_gpio(&relay_handle, GROUND_RELAY, RELAY_ON); // Temporary.
+            vTaskDelay(10);                                                   // Temporary.
+            zh_avr_ac_dimmer_start();                                         // Temporary.
         }
         else
         {
@@ -235,7 +239,10 @@ void zh_avr_pcf8574_event_handler(zh_avr_pcf8574_event_on_isr_t *event)
             }
             zh_avr_pcf8574_write_gpio(&led1_handle, NUM1_LED_BLUE, LED_ON);
             zh_avr_pcf8574_write_gpio(&led1_handle, NUM1_LED_GREEN, LED_OFF);
+            zh_avr_ac_dimmer_stop(); // Temporary.
+            vTaskDelay(10);          // Temporary.
             zh_avr_pcf8574_write_gpio(&relay_handle, L1_RELAY, RELAY_OFF);
+            zh_avr_pcf8574_write_gpio(&relay_handle, GROUND_RELAY, RELAY_OFF); // Temporary.
             is_num1_fixed = false;
         }
         break;
@@ -254,6 +261,9 @@ void zh_avr_pcf8574_event_handler(zh_avr_pcf8574_event_on_isr_t *event)
             zh_avr_pcf8574_write_gpio(&led1_handle, NUM2_LED_BLUE, LED_OFF);
             zh_avr_pcf8574_write_gpio(&led1_handle, NUM2_LED_GREEN, LED_ON);
             zh_avr_pcf8574_write_gpio(&relay_handle, L2_RELAY, RELAY_ON);
+            zh_avr_pcf8574_write_gpio(&relay_handle, GROUND_RELAY, RELAY_ON); // Temporary.
+            vTaskDelay(10);                                                   // Temporary.
+            zh_avr_ac_dimmer_start();                                         // Temporary.
         }
         else
         {
@@ -265,7 +275,10 @@ void zh_avr_pcf8574_event_handler(zh_avr_pcf8574_event_on_isr_t *event)
             }
             zh_avr_pcf8574_write_gpio(&led1_handle, NUM2_LED_BLUE, LED_ON);
             zh_avr_pcf8574_write_gpio(&led1_handle, NUM2_LED_GREEN, LED_OFF);
+            zh_avr_ac_dimmer_stop(); // Temporary.
+            vTaskDelay(10);          // Temporary.
             zh_avr_pcf8574_write_gpio(&relay_handle, L2_RELAY, RELAY_OFF);
+            zh_avr_pcf8574_write_gpio(&relay_handle, GROUND_RELAY, RELAY_OFF); // Temporary.
             is_num2_fixed = false;
         }
         break;