The CD-2xx-E00-00 series is a wall mount transmitter for measuring the CO2 levels and the relevant temperature within Heating, Ventilation and Air Conditioning applications. The CD-2xx Series incorporates a single beam dual wavelength NDIR CO2 sensor, which compensates for ageing effects, is highly insensitive to pollution and offers outstanding long term stability. A multiple point CO2 and T factory adjustment procedure leads to excellent CO2 measurement accuracy over the entire T working range. This compact wall-mounted device produces 0 to 10 V or 4 to 20 mA signals and it is designed to work as part of any HVAC control system. This new CO2 transmitter is easy to install, offers a full 3-year warranty, and requires no maintenance or field calibration. Feature: Power Supply 15...35 VDC / 24 VAC 0…10 V or 4…20 mA CO2 and Temperature Output Models with Display Snap-on Enclosure Outstanding long-term stability CO2 Factory Calibration Certificate