diff --git a/arduino/libretuya/core/lt_logger.c b/arduino/libretuya/core/lt_logger.c
index f867fd1..f3feac5 100644
--- a/arduino/libretuya/core/lt_logger.c
+++ b/arduino/libretuya/core/lt_logger.c
@@ -50,6 +50,9 @@ void lt_log(const uint8_t level, const char *caller, const unsigned short line,
 void lt_log(const uint8_t level, const char *format, ...) {
 #endif
 
+	if (uart_port == 0xFF)
+		return;
+
 #if LT_LOGGER_TIMESTAMP
 	float seconds = millis() / 1000.0f;
 #if LT_PRINTF_BROKEN
@@ -136,3 +139,7 @@ void lt_log(const uint8_t level, const char *format, ...) {
 void lt_log_set_port(uint8_t port) {
 	uart_port = port;
 }
+
+void lt_log_disable() {
+	uart_port = 0xFF;
+}
diff --git a/arduino/libretuya/core/lt_logger.h b/arduino/libretuya/core/lt_logger.h
index c178841..84ac288 100644
--- a/arduino/libretuya/core/lt_logger.h
+++ b/arduino/libretuya/core/lt_logger.h
@@ -20,6 +20,11 @@ void lt_log(const uint8_t level, const char *format, ...);
  */
 void lt_log_set_port(uint8_t port);
 
+/**
+ * @brief Disable LT logger. Enable it back using lt_log_set_port(LT_UART_DEFAULT_LOGGER).
+ */
+void lt_log_disable();
+
 #if LT_LEVEL_TRACE >= LT_LOGLEVEL
 #define LT_T(...) LT_LOG(LT_LEVEL_TRACE, __FUNCTION__, __LINE__, __VA_ARGS__)
 #define LT_V(...) LT_LOG(LT_LEVEL_TRACE, __FUNCTION__, __LINE__, __VA_ARGS__)