Noted:All batteries are not included

This product is a smart carbon monoxide and smoke combo detector, adopting microprocessor control. The electrochemical carbon monoxide sensor is stable and reliable with low current consumption and small sensitivity drift.

Mainly well used in the place of carbon monoxide gas leakage and fire place, well guarantee personal safety. It can work with Tuya or Smart life APP, you can check and receive the alarms through the APP even you are far away from home, no need any gateway, just connect with house WiFi.

New Function: Add bluetooth module. Use the bluetooth to machine. Make WiFi connection to become more efficient.