Extech Co100: Desktop Indoor Air Quality Co2 Monitor

The CO100 is a desktop indoor air quality CO? monitor that measures carbon dioxide concentrations (CO?) from 0 to 9,999ppm, air temperature and humidity. With user programmable visible and audible CO? warning alarm. Meter has a maximum/minimum CO? value recall function. Maintenance free NDIR (non-dispersive infrared) CO? sensor. Complete with Universal AC adaptor.Checks for Carbon Dioxide (CO?) concentrationsMaintenance free NDIR (non-dispersive infrared) CO? sensorIndoor Air Quality displayed in ppm with Good (0 to 800ppm), Normal (800 to 1200ppm), Poor (>1200ppm) indicationUser programmable Visible and Audible CO? warning alarmMeasurement ranges:CO?: 0 to 9999ppmTemperature: 23 to 122