KIDDE 10 Year Carbon Monoxide Alarm Model K7CO. Tested and approved for use in boats and caravans. Sleek, lightweight battery-powered. CO alarm provides long-term protection against the dangers of deadly carbon monoxide and provides continuous monitoring of CO levels, the 10-year sensor lasts longer than most other CO alarms. This slim, easy-to-use alarm is ideal for use in all living areas and can be installed on a wall or ceiling or used freestanding on a table or shelf. It is also easily portable so can be taken away on holidays or used on boats or in caravans. Multi-function green and red LEDs to indicate power and alarm status. End-of-life warning alerts user to replace alarm after 10 years of protection. Test/Reset button to allow regular testing of alarm function. Battery operation ? 2 x AA alkaline batteries supplied as standard. Alarm Dimensions 116 x 72 x 40mm. Alarm Weight 120g