Combo smoke and CO alarm. 10-year alarm life. No battery changes for the life of the alarm. Separate sensors to detect smoke and CO, the two alarm systems work independently. Sealed-In lithium battery. Electrochemical sensor. 3V Lithium power cell included. Power LED and alarm indicator. Mute/silence button. End of life signal. 4.92″ length x 4.92″ width x .94″ height.
Original Price: $46.69