Extech CO10 Digital Carbon Monoxide Tester

Extech CO10 Digital Carbon Monoxide Tester features quick CO measurements from 0 to 1000ppm with 1ppm resolution, +-5% or +-10ppm basic accuracy, and easy-to-read 1999 count backlit display. The Extech CO10 permits simple one-button operation, an audible alarm, and automatic shut-off feature.