The Smart Lock C34/E30 is equipped with a low-battery alert system. When the battery level is low, you will receive a notification through the eufy app prompting you to replace the batteries.

Note: It's recommended to replace the batteries promptly after receiving the low-battery alert to ensure continued functionality and avoid lockout.

If you have any other questions regarding the Smart Lock C34/E30, please don't hesitate to contact us for assistance.