diff --git a/src/drivers/hygrometer/sht3x/sht3x.cpp b/src/drivers/hygrometer/sht3x/sht3x.cpp
index ff68cd62c3..dfc6db5f96 100644
--- a/src/drivers/hygrometer/sht3x/sht3x.cpp
+++ b/src/drivers/hygrometer/sht3x/sht3x.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   Copyright (c) 2021 PX4 Development Team. All rights reserved.
+ *   Copyright (c) 2021-2023 PX4 Development Team. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -195,6 +195,24 @@ int SHT3X::init_sensor()
 
 	PX4_INFO("Connected to SHT3x sensor, SN: %ld", _sht_info.serial_number);
 
+	// Modify ALERT range values to minimalize ALERT led heating.
+
+	// def temp(t):
+	//     return ((t+45)*(2**16-1))/175
+	// def hum(h):
+	//	return (h/100)*(2**16-1)
+	//
+	// hex((int(hum(80))>>9<<9) | (int(temp(60))>>7))
+
+	uint8_t sh[] {0xff, 0xe2};
+	uint8_t ch[] {0xfb, 0xdc};
+	uint8_t sl[] {0x00, 0x0e};
+	uint8_t cl[] {0x04, 0x14};
+	write_data(SHT3x_CMD_ALERT_W_SET_HIGH, sh, 2);		// 100%, 120C
+	write_data(SHT3x_CMD_ALERT_W_CLEAR_HIGH, ch, 2);	// 98%, 118C
+	write_data(SHT3x_CMD_ALERT_W_SET_LOW, sl, 2);		// 0%, -40C
+	write_data(SHT3x_CMD_ALERT_W_CLEAR_LOW, cl, 2);		// 2%, -38C
+
 	return PX4_OK;
 }
 
diff --git a/src/drivers/hygrometer/sht3x/sht3x.h b/src/drivers/hygrometer/sht3x/sht3x.h
index ff698446f0..2750b8d9ff 100644
--- a/src/drivers/hygrometer/sht3x/sht3x.h
+++ b/src/drivers/hygrometer/sht3x/sht3x.h
@@ -53,9 +53,13 @@
 
 #define SHT3X_CMD_READ_STATUS			0xF32D
 #define SHT3X_CMD_CLEAR_STATUS			0x3041
-#define SHT3x_CMD_PERIODIC_2HZ_MEDIUM	0x2220
+#define SHT3x_CMD_PERIODIC_2HZ_MEDIUM		0x2220
 #define SHT3x_CMD_FETCH_DATA			0xE000
-#define SHT3x_CMD_READ_SN				0x3780
+#define SHT3x_CMD_READ_SN			0x3780
+#define SHT3x_CMD_ALERT_W_SET_HIGH		0x611D
+#define SHT3x_CMD_ALERT_W_SET_LOW		0x6100
+#define SHT3x_CMD_ALERT_W_CLEAR_HIGH		0x6116
+#define SHT3x_CMD_ALERT_W_CLEAR_LOW		0x610B
 
 
 using namespace time_literals;