diff --git a/LoRaWAN/App/lora_app.c b/LoRaWAN/App/lora_app.c
index 252e2d3..f85dadc 100644
--- a/LoRaWAN/App/lora_app.c
+++ b/LoRaWAN/App/lora_app.c
@@ -839,6 +839,8 @@ static void SendTxData(void)
 
 #ifdef	STS_P2
     AppData.Port = YUNHORN_STS_P2_LORA_APP_DATA_PORT; /* STS-P2 Data Port */
+#elif 	defined(STS_T6)
+    AppData.Port = YUNHORN_STS_T6_LORA_APP_DATA_PORT; /* STS-T6 Data Port */
 #endif
 
 #ifdef CAYENNE_LPP
@@ -947,6 +949,11 @@ static void SendTxData(void)
 
 #endif	//STS_P2
 
+#if	defined(STS_T6)
+     AppData.Buffer[i++] = 1;
+     AppData.Buffer[i++] = (uint8_t)((sts_t6_sensor_data.tof_range_presence_state & 0xFF));
+
+#endif	//STS_T6
 /* STS-R4 SOAP LEVEL SENSOR */
 #ifdef	STS_R4
      AppData.Buffer[i++]	= 2;
diff --git a/STS/Core/Src/yunhorn_sts_process.c b/STS/Core/Src/yunhorn_sts_process.c
index 10fa6e8..f4eff01 100644
--- a/STS/Core/Src/yunhorn_sts_process.c
+++ b/STS/Core/Src/yunhorn_sts_process.c
@@ -48,6 +48,7 @@
 #include "app_tof.h"
 #include "app_tof_peoplecount.h"
 extern volatile uint8_t sts_door_jam_profile;
+extern volatile uint8_t sts_tof_presence_state_changed;
 #endif
 volatile sts_cfg_nvm_t sts_cfg_nvm = {
 		sts_mtmcode1,
@@ -109,7 +110,7 @@ volatile uint8_t sts_work_mode=4;
 volatile uint32_t rfac_timer=0;
 volatile uint16_t sts_sensor_install_height=3000;
 volatile uint8_t sensor_data_ready=0;
-volatile uint32_t STS_TOFScanPeriod_msec=1000, STS_TxPeriod_sec=10, STS_HeartBeatTimerPeriod_sec=60;
+volatile uint32_t STS_TOFScanPeriod_msec=250, STS_TxPeriod_sec=10, STS_HeartBeatTimerPeriod_sec=60;
 static uint8_t outbuf[128]={0x0};
 extern volatile hmac_result_t hmac_result;
 extern uint16_t sensor_id;
@@ -423,6 +424,12 @@ void STS_YunhornSTSEventP5_Process(void)
 	STS_TOF_VL53LX_PeopleCounting_Process_Start();
 #elif	defined(STS_T6)
 	STS_TOF_VL53LX_PresenceDetection_Process_Start();
+	if (sts_tof_presence_state_changed)
+	{
+		sts_tof_presence_state_changed = 0;
+		UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_LoRaSendOnTxTimerOrButtonEvent), CFG_SEQ_Prio_0);
+
+	}
 #endif
 
 }
diff --git a/STS/TOF/App/app_tof_peoplecount.c b/STS/TOF/App/app_tof_peoplecount.c
index f5a97f0..04f3307 100644
--- a/STS/TOF/App/app_tof_peoplecount.c
+++ b/STS/TOF/App/app_tof_peoplecount.c
@@ -15,7 +15,7 @@
 extern I2C_HandleTypeDef hi2c2;
 volatile sts_people_count_sensor_data_t sts_people_count_sensor_data={0,0,0,2,'M',0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1};
 extern volatile uint32_t STS_TOFScanPeriod_sec, STS_TxPeriod_sec, STS_HeartBeatTimerPeriod_sec;
-volatile uint8_t sts_tof_presence_state=0;
+volatile uint8_t sts_tof_presence_state=0, sts_tof_presence_state_changed=0;
 
 /* TIMING_BUDGET, in ms possible values [15, 20, 50, 100, 200, 500] */
 /* DISTANCE_THRESHOLD = MAX - ASSUME_CHILD_HEIGHT(800mm)            */
@@ -36,7 +36,7 @@ volatile sts_zone_center_by_rows_of_spads_t zone_center[4]={
 #if	(defined(STS_P2)||defined(STS_T6))
 extern volatile uint8_t sts_door_jam_profile;
 volatile uint8_t sts_presence_state=0;
-static int PresenceState=0;
+static int PresenceState=0, PrevPresenceState=0;
 volatile uint8_t sts_distance_mode = 0; //sts_door_jam_profile; //DOOR_JAM_3000;
 #endif
 
@@ -613,12 +613,23 @@ int sts_tof_vl53lx_presence_detection_start(void)
   if (Distance < ppc_cfg[sts_distance_mode].dist_threshold)
   {
 	  PresenceState = 1;
+	  LED1_ON;
   } else {
 	  PresenceState = 0;
+	  LED1_OFF;
   }
   //PresenceState = ProcessPresenceDetectionData(Distance, Zone, RangeStatus);
-  printf("\nPresenceState =%d \n\r", PresenceState);
-  APP_LOG(TS_OFF, VLEVEL_M,"%d,%d,%d\n", Zone, Distance, Signal);
+  //printf("\nPresenceState =%d \n\r", PresenceState);
+  if (PresenceState == PrevPresenceState)
+  {
+	  sts_tof_presence_state_changed = 0;
+	  return 0;
+  } else {
+	  sts_tof_presence_state = PresenceState;
+	  PrevPresenceState = PresenceState;
+	  sts_tof_presence_state_changed = 1;
+  }
+  //APP_LOG(TS_OFF, VLEVEL_M,"%d,%d,%d\n", Zone, Distance, Signal);
   Zone++;
   Zone = Zone%2;