The testo 317-3 ambient CO meter provides fast and easy CO testing with a small, lightweight form factor. An exclusive self-test mode provides worry-free operation, as it will always verify that the CO sensor is functioning, anytime and anywhere, without the need for test gas. In addition, the self-check will ensure accurate CO measurements, without the need to “zero” out the unit in a fresh air environment.
Three year CO sensor warranty
Adjustable alarm threshold
Programmable high and low alarm options
Earphone jack, and earbuds for loud environments
Hands free operation with belt clip soft case
testo 317-3 ambient CO meter, soft case with belt clip, hand strap, earbuds, 2 AA batteries, and instruction manual