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.
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
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