AIR4100T14R

Room Air Quality Monitor, 0-2000 ppm CO2 Equivalent, LCD Concealed, LED Concealed, 10K Ohm, type 3, NTC Thermistor, ?0.2 C c/w 11K shunt resistor, Relay Output https://downloads.greystoneenergy.com/Submittals/PS-AIR41XXX.pdf https://downloads.greystoneenergy.com/Install%20Notes/IN-GE-AIR41XXX.pdf