diff --git a/Src/command.c b/Src/command.c
index dce62ff..37c99de 100644
--- a/Src/command.c
+++ b/Src/command.c
@@ -277,14 +277,12 @@ void handle_command(const uint8_t *frame, uint8_t len) {
         switch (base_cmd) {
             case 1u: // M1命令
                 set_sensor_report_status(true);
-                // led_on();
                 // send_response(RESP_TYPE_OK, s_report_status_ok, sizeof(s_report_status_ok));
                 uint8_t test_response1[] = { 0xAA, 0xBB, 0xCC, 0xDD };
                 send_response(RESP_TYPE_OK, test_response1, sizeof(test_response1));
                 return;
             case 2u: // M2命令
                 set_sensor_report_status(false);
-                // led_off();
                 // send_response(RESP_TYPE_OK, s_report_status_ok, sizeof(s_report_status_ok));
                 uint8_t test_response2[] = { 0xDD, 0xCC, 0xBB, 0xAA };
                 send_response(RESP_TYPE_OK, test_response2, sizeof(test_response2));
@@ -294,6 +292,9 @@ void handle_command(const uint8_t *frame, uint8_t len) {
             case 3u: // M3命令
                 send_response(RESP_TYPE_OK, s_report_status_ok, sizeof(s_report_status_ok));
                 return;
+            case 4u: // M4命令
+                send_response(RESP_TYPE_OK, s_report_status_err, sizeof(s_report_status_err));
+                return;
             // case 10u: // M10命令
             //     send_response(RESP_TYPE_OK, s_report_status_ok, sizeof(s_report_status_ok));
             //     return;