The BRK® CO850MRLi 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 backup Li-ion battery. These tamper-proof rechargeable lithium cells give reliable backup for at least 6 months with alarm in standby mode. 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.