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.).
* RS232/USB computer interface.
