The CDD5*10 series uses a highly accurate and reliable Non‑dispersive Infrared (NDIR) sensor to monitor CO2 , a precision thermistor to monitor temperature and a thermoset polymer based capacitance sensor to measure humidity levels combined with state‑of‑the‑art digital linearization and temperature compensated circuitry in an attractive, low profile enclosure for room applications and provides 3 analog outputs. Optional setpoint slidepot, momentary override and adjustable relay output are also available.