+int mw_low_battery_warning_message(mwdevice_t *mwdevice, unsigned char option, unsigned char *statrsp, int len);
+void mw_set_low_battery_warning_message_cb(mwdevice_t *mwdevice, void (*mw_low_battery_warning_message_cb) (mwdevice_t *mwdevice, void *user_data), void *user_data);
+
+int mw_low_battery_bt_off_message(mwdevice_t *mwdevice, unsigned char option, unsigned char *statrsp, int len);
+void mw_set_low_battery_bt_off_message_cb(mwdevice_t *mwdevice, void (*mw_low_battery_bt_off_message_cb) (mwdevice_t *mwdevice, void *user_data), void *user_data);
+