Deta Carbon Monoxide Alarm is a battery powered alarm system uses electrochemical sensing technology for its operation. Provided with LED for operation indication. This compact range of CO alarm will alert you to the presence of Carbon Monoxide and should be placed in the same room as a fuel-burning appliance or any room that has a flue running through it. it has a sealed battery and low battery warning facility is available. Supplied with a stand or can be mounted to the wall.