Carbon monoxide (CO) detector powered by replaceable batteries. Designed to accurately measure low levels of CO. Features an advanced electrochemical sensor calibrated and tested in CO gas. Intelligent sensing technology increases the sensing rate upon detection of carbon monoxide. Can be installed in any room containing a fuel-burning appliance e.g gas hob, open fire, boiler. Integrated bracket offers wall-mounted or freestanding use. Suitable for home and / or travel use.