The ADT Command Carbon Monoxide Detector, Model Name SIXCOA, is a reliable and essential home security device that operates on 2 batteries with a power source of battery. This carbon monoxide detector features a photoelectric smoke sensor and smart home compatibility for added convenience and peace of mind. With an operating sound rating of 110 dB, it ensures that you and your family are well protected against potential hazards in the event of a carbon monoxide leak.