Carbon Monoxide Bump Tester Includes (6) Wicks Filter and Applicator Smoke Pen Product Type CO Bump Tester For Detector Type CO Detector For Use With Mfr No CO-R Gas Contents Carbon Monoxide Gas Produced 800 to 1000 ppm Filtered CO Manufacturer Warranty Length 1 yr Maximum Operating Temperature 400 Degrees F Minimum Operating Temperature 90 Degrees F Overall Height 2 in Overall Length 7.75 in Overall Width 6.25 in