Lutron CO2 Meter GCH-2018
roduct Description LUTRON CO2 METER, + Humidity, Temperature.GCH-2018 * CO2 range : 0 to 4, 000 ppm. * CO2 sensor : NDIR, long term reliability. * CO2 with alarm setting. * Function : CO2 ( Carbon dioxide) , Humidity, Dew point, Temperature. * Data hold, Record ( Max., Min.) . Optional * RS232/ USB