diff --git a/Core/Src/sts_lamp_bar.c b/Core/Src/sts_lamp_bar.c
index f7aa3df..8978106 100644
--- a/Core/Src/sts_lamp_bar.c
+++ b/Core/Src/sts_lamp_bar.c
@@ -562,7 +562,7 @@ void STS_Lamp_Bar_Self_Test_Simple(void)
 		luminance_level = 10;
 		do {
 			STS_Lamp_Bar_Set_STS_RGB_Color(color, luminance_level);
-			HAL_Delay(10);
+			HAL_Delay(50);
 			luminance_level += 20;
 		} while (luminance_level < 99);
 		//STS_Lamp_Bar_Set_Dark();