The BRK® CO850MBXi Carbon Monoxide Alarm uses the latest electrochemical sensing technology to continuously monitor for the presence of deadly carbon monoxide (CO) in the home. It has power, alarm and fault indicators and an instant test/reset feature.

The alarm is 230V mains powered with a 9V alkaline battery backup, that provides power to the unit in the event of mains failure. Up to 12 compatible CO alarms can be linked for simultaneous warning. 

Conforms to BS EN 50291-1: 2010 and comes with a 5 year guarantee.