First Alert 10-Year Sealed Battery Photoelectric/Electrochemical Slim Round Carbon Monoxide and Smoke Alarm Picture Hangers Durable nickel plated hardware

Durable nickel plated hardware

Practically disappears when on window

1/4" x 1-7/8" Magnetic Nut Driver

Sodium Lauryl Sulfate

Convenient cleaning and refilling – simply lift the Observer from its suction cups

First Alert 10-Year Sealed Battery Photoelectric/Electrochemical Slim Round Carbon Monoxide and Smoke Alarm Picture Hangers Durable nickel plated hardwarePhotoelectric & electrochemical sensor Slim design, half as thick as a standard alarm Includes a built in 10 year lithium ion battery provides continuous power, with no need to ever worry about changing the battery during the lifetime of the alarm 10 year limited warranty