cSense CO2 + RH/T monitor with relay

CO2Meter AZ-0015-co2-iaq-meter-Front_largeThe cSense continuously displays carbon dioxide, temperature and relative humidity levels so you can monitor the quality of air in your home, office, or factory. Just plug it in – the cSense turns on instantly, is self-calibrating, and is designed to last for years.

In addition to monitoring levels, the cSense has both a user-configurable 80dB alarm and a relay output. The normally-open relay closes when CO2 reaches the pre-set low level to turn on a CO2 generator or similar devices.

Unlike chemical gas sensors that last for months and must be replaced, the non-dispersive infrared diffusion CO2 sensor (NDIR) in the cSense provides the following benefits:

  • Sensitive & accurate – information you can act on
  • Self-calibrating – no need to send the monitor in for re-calibration
  • Manual calibration important for gardening with supplemental CO2
  • No moving parts – nothing to break or wear out
  • Does not loose accuracy in heat or cold
  • No over-exposure or negative memory effects


  • CO2 Range: 0 – 9,999 ppm
  • CO2 Accuracy: ± 50ppm ±5% reading value
  • Alarm: Loud 80DB configurable buzzer
  • Relay (Screw terminal): 1A @ 30VDC or .5A @ 120VAC Normally Open
  • Temperature Range: +14 to +140F (-10 to +60C)
  • Temperature Accuracy: ±0.9 F (±0.6 C)
  • Humidity Range: 0.1% to 99.9% RH
  • Humidity Accuracy: ±5% RH
  • Power Consumption: 12VDC (±10%) >50mA)
  • Display: Temperature, Humidity and CO2
  • Data Logging capabilities while tethered to PC via RS232 interface and software
  • Size: 130x85x60mm
  • Weight: 200g


  • 110/220 VAC Wall Adapter
  • User’s Manual


  • 1 year