diff --git a/Core/Src/yunhorn_sts_presence_rss.c b/Core/Src/yunhorn_sts_presence_rss.c
index 252c56b..c0a7dc4 100644
--- a/Core/Src/yunhorn_sts_presence_rss.c
+++ b/Core/Src/yunhorn_sts_presence_rss.c
@@ -74,8 +74,8 @@
 #define DEFAULT_NBR_REMOVED_PC       				(0)			//default 0 int						[10]
 
 #define	DEFAULT_DOWNSAMPLING_FACTOR					(2)			//default 1
-#define	DEFAULT_RECEIVER_GAIN						(0.65f)		//default 0.9 gain mdB				[4]
-//#define	DEFAULT_RECEIVER_GAIN						(0.65f)		//default 0.9 gain mdB				[4]
+//#define	DEFAULT_RECEIVER_GAIN					(0.65f)		//default 0.9 gain mdB				[4]
+#define	DEFAULT_RECEIVER_GAIN						(0.40f)		//default 0.9 gain mdB				[4]
 
 #define DEFAULT_MOTION_DATASET_LEN		(128)		//MOTION DATASET/PATTERN COLLECTION
 #define DEFAULT_MOTION_FEATURE_LEN		(10)		//MOTION FEATURE IDENDIFIED