Greystone CDD4B101T20S Room, CO2, NDIR dual beam, c/w analog outputs, exposed LCD display, 20,000 ohm thermistor and override switch

Greystone CDD4B101T20S Room, CO2, NDIR dual beam, c/w analog outputs, exposed LCD display, 20,000 ohm thermistor and override switch. The CDD4B1 Series features highly accurate NDIR sensor in low profile enclosure for room applications monitoring Carbon Dioxide levels