Measurements :
O2 : 0 to 20.9%
CO (low-range, H2-compensated) : 0 to 4000 ppm
CO (high-range, optional) : 4001 to 20,000 ppm
NO (optional) : 0 to 3000 ppm
NO2 (optional) : 0 to 500 ppm
SO2 (optional) : 0 to 5000 ppm
Stack temperature : -4 to 2192 °F (-20 to 1200 °C)
Primary/ambient air temperature : -4 to 999 °F (-20 to 537 °C)
Draft/differential pressure : ± 72 inH2O (± 179 mbar)
Power : 4x AA batteries or optional wall adapter
Run Time : 10 hours minimum (alkaline batteries)
Size (H x W x D) : 9.0 x 3.0 x 2.5 in. (22.9 x 7.6 x 6.3 cm)
Weight : 2.4 lb. (1.1 kg) including batteries and probe