Extech CO10 Digital Carbon Monoxide Tester

• Ergonomic pocket size housing
• One button operation
• Easy to read 1999 count backlit displays CO levels from 0 to 1000ppm
• Audible alarm starts at 35ppm with continuous beeping when above 200ppm
• Backlight for low light conditions
• Max Hold and Data hold buttons
• Auto Power off

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 www.P65Warnings.ca.gov.