diff --git a/app/src/acid_dispenser_ble_slave_main.c b/app/src/acid_dispenser_ble_slave_main.c
index c752b24..c8cbb68 100644
--- a/app/src/acid_dispenser_ble_slave_main.c
+++ b/app/src/acid_dispenser_ble_slave_main.c
@@ -216,9 +216,15 @@ void pre_process_state(app_event_t* event, uint16_t event_size) {
 
   static int32_t cnt;
   if (eventType == kappevent_tmr_1s_scheduler_event) {
+    ZLOGI("scheduler.....");
     if (cnt % 5 == 0 && zble_module_is_connected()) {
       send_report_heart(battery_mgr_get_battery_level(), zapp_get_gstate()->reset_flag, 1);
     }
+
+    if (cnt % 5 == 0) {
+      light_ctrl_trigger_once_low_power();
+    }
+    cnt++;
   }
 }
 
diff --git a/app/src/app_service/light_ctrl.c b/app/src/app_service/light_ctrl.c
index 8c65ec0..e23457d 100644
--- a/app/src/app_service/light_ctrl.c
+++ b/app/src/app_service/light_ctrl.c
@@ -6,10 +6,11 @@
 #include "board/board.h"
 #include "nrf_gpio.h"
 #include "znordic.h"
-#define PERIOD_MS 300
+#define PERIOD_MS 100
 
 APP_TIMER_DEF(m_schedule_tmr);
-
+bool        m_triggerOnceLowPowerEffect;
+int         m_triggerOnceLowPowerEffectCnt = 0;
 static void nrf_gpio_set_rgb(uint8_t r, uint8_t g, uint8_t b) {
   nrf_gpio_pin_write(LEDR, r);
   nrf_gpio_pin_write(LEDG, g);
@@ -18,6 +19,24 @@ static void nrf_gpio_set_rgb(uint8_t r, uint8_t g, uint8_t b) {
 
 static void light_tmr_cb(void* p_context) {
   static bool laststate = false;
+  laststate             = !laststate;
+
+  if (m_triggerOnceLowPowerEffect) {
+    m_triggerOnceLowPowerEffectCnt++;
+    if (m_triggerOnceLowPowerEffectCnt * PERIOD_MS > 2000) {
+      m_triggerOnceLowPowerEffect    = false;
+      m_triggerOnceLowPowerEffectCnt = 0;
+      return;
+    }
+    if (m_triggerOnceLowPowerEffectCnt % 6 < 3) {
+      nrf_gpio_set_rgb(0, 0, 0);
+    } else {
+      nrf_gpio_set_rgb(1, 0, 0);
+    }
+
+    return;
+  }
+
   if (zappcore_get_state() == kstate_offline_standby) {
     nrf_gpio_set_rgb(0, 0, 0);
   } else if (zappcore_get_state() == kstate_offline_broadcast) {
@@ -39,15 +58,18 @@ static void light_tmr_cb(void* p_context) {
       } else {
         nrf_gpio_set_rgb(0, laststate, laststate);
       }
-      laststate = !laststate;
     }
   } else if (zappcore_get_state() == kstate_online_standy) {
     nrf_gpio_set_rgb(0, 0, 0);
   }
 }
 
-void light_ctrl_init() {
+void light_ctrl_trigger_once_low_power() {
+  m_triggerOnceLowPowerEffect    = true;
+  m_triggerOnceLowPowerEffectCnt = 0;
+}
 
+void light_ctrl_init() {
   nrf_gpio_cfg_output(LEDR);
   nrf_gpio_cfg_output(LEDG);
   nrf_gpio_cfg_output(LEDB);
@@ -55,4 +77,3 @@ void light_ctrl_init() {
   ZERROR_CHECK(app_timer_create(&m_schedule_tmr, APP_TIMER_MODE_REPEATED, light_tmr_cb));
   ZERROR_CHECK(app_timer_start(m_schedule_tmr, APP_TIMER_TICKS(PERIOD_MS), NULL));
 }
-
diff --git a/app/src/app_service/light_ctrl.h b/app/src/app_service/light_ctrl.h
index ad6029e..ef6371e 100644
--- a/app/src/app_service/light_ctrl.h
+++ b/app/src/app_service/light_ctrl.h
@@ -8,3 +8,4 @@
 
 
 void light_ctrl_init();  // mainÖгõʼ»¯Ò»±é
+void light_ctrl_trigger_once_low_power();
\ No newline at end of file