Description Features High co2 measurement accuracy Low drift portable meter checking poor indoor air quality in office Triple display 3 parameters simultaneously: co2, temperature Warning carbon dioxide level Big lcd display with high resolution Design with ndir (non-dispersive infrared) waveguide technology Housing design surrounds with rails to help air ventilation Technical Specifications CO2 Measuring range 0 ppm to 9999 ppm Temperature measuring range 14 °F to 140 ℉ (-10 °C to 60 °C) Relative humidity measuring range 0.1% RH to 99.9% RH DP measuring range -4 °F to 189 °F (-20.0 °C to 59.9 °C) WB measuring range 23 °F to 189 °F (-5.0 °C to 59.9°C) Warm-up time 30 seconds Resolution 1 ppm, 33.8 °F (0.1°C), 0.1%RH Power supply AA x 4PCS Meter size 8.07 in x 2.75 in x 2.20 in (205 mm x 70 mm x 56 mm)
