Features & details (A20) 

Efficient: The flue gas meter achieves the accurate readings needed for furnace and boiler service and maintenance, as well as weatherization audits and home inspections

Easy operation: Automatic zeroing, a range of up to 1,999 ppm and an exclusive self-check provide quick and worry-free CO measurements - without the need for test gas

Reliable: Visual and audible alarms with an programmable high and low alarm threshold warn the user effectively about potentially harmful CO concentrations

Compact: Thanks to the compact design, quick start and belt clip soft case, the lightweight carbon monoxide detector stick offers an easy and hands-free application

Accessories: The batterie powered flue gas detector comes with a protective soft case and clip belt, along with a hand strap and earbuds for loud working environments