The Extech CO10 carbon monoxide meter provides safety checks in all environments up to 1000 ppm. Ergonomic pocket-size housing and one-button operation for convenience. 1999 count backlit display shows CO levels from 0 to 1000 ppm.

Audible alarm starts at 35 ppm, continuous beeping above 200 ppm. Max hold and data hold buttons, auto power off. Complete with 9V battery, protective rubber holster, and carrying case. Applications include indoor air quality monitoring, boiler rooms, parking garages, and industrial safety checks.