Greystone CDD4B101T20R Room, CO2, NDIR dual beam, c/w analog outputs, exposed LCD display, 20,000 ohm thermistor and relay

Greystone CDD4B101T20R Room, CO2, NDIR dual beam, c/w analog outputs, exposed LCD display, 20,000 ohm thermistor and relay. The CDD4B1 Series features highly accurate NDIR sensor in low profile enclosure for room applications monitoring Carbon Dioxide levels