diff --git a/externals/eltres/CXM150x_SDK/CXM150x_port/CXM150x_Port.c b/externals/eltres/CXM150x_SDK/CXM150x_port/CXM150x_Port.c
index f08bd03d1..bb774e4b5 100644
--- a/externals/eltres/CXM150x_SDK/CXM150x_port/CXM150x_Port.c
+++ b/externals/eltres/CXM150x_SDK/CXM150x_port/CXM150x_Port.c
@@ -93,7 +93,12 @@ static bool g_stop_thread = false;
 // ===========================================================================
 int32_t wrapper_CXM150x_set_uart_rx_buf(uint8_t *rcv_char_buf){
     g_rcv_buf = rcv_char_buf;
-
+#ifdef CONFIG_EXTERNALS_ELTRES_ADDON
+    if (CXM150x_POWER_OFF == wrapper_CXM150x_get_power()){
+        board_gpio_config(ELTRES_PIN_ENABLE, 0, false, false, PIN_FLOAT);
+        board_gpio_write(ELTRES_PIN_ENABLE, 0);
+    }
+#endif
     if (g_uart_recv_thread == (pthread_t)0){
         /* Create UART reception thread */
         struct sched_param param;