Fireboy CMD6MBR CMD-6 Carbon Monoxide Alarm, Battery Operated, White

Designed for Marine use. CMD-6 with new internal circuit board. Visible and audible alarm. Permanent deactivation method. Drip proof and salt spray corrosion tested. Chemical and solvent resistant housing. 3.5" H x 3.5" W x 1.2" D. Mounting bracket and screws included. Conforms to UL STD 2034. Appoximate 7 year life.