CHTDTB1VR

Carbon Dioxide (CO2), Humidity & Temperature Transmitter, Duct, Polycarbonate with hinged and gasketed cover, Non-Dispersive Infrared (NDIR), diffusion sampling, 0-2000 ppm, Voltage 0-5 Vdc, 0-10 Vdc, field selectable, Relay https://downloads.greystoneenergy.com/Website%20Documents/CHT/PS-CHTDTXXX.pdf https://downloads.greystoneenergy.com/Install%20Notes/IN-GE-CHTDTXXX.pdf