Starting at $402.78 Starting at $322.22

Slide potentiometer option is limited to in-stock inventory only

  • Usually ships in 1-2 weeks



  • Non-dispersive infrared (NDIR) absorption sensor provides high accuracy in a compact, low cost package
  • Night setback override button shorts the thermistor output when depressed
  • CO2 measurement range: 0 to 2000 ppm
  • Accuracy: up to ±30 ppm or 3% of reading
  • Optional slide potentiometer
    • Left (stop) 0k Ohms (±5k Ω)
    • Center 50k Ohms (±7.5k Ω)
    • Right (stop) 100k Ohms (±15K Ω)
  • Patented ABC Logic self-calibration system eliminates the need for manual calibration in most applications
  • Mounting plate with two-piece terminal blocks provide quick, easy wiring
  • Gas permeable, water resistant CO2 diffusion filter prevents particulate and water contamination of the sensor
  • Locking screw secures cover and sensor to the mounting bracket for tamper resistance
  • Dual simultaneous analog outputs (V & mA) available for CO2
  • Sensors are shipped factory calibrated
  • Temperature sensor on all models
  • CE and RoHS compliant


The Telaire Ventostat CO2 sensors is a commercial grade instrument with a night setback override feature and optional slide potentiometer. Designed for Demand Controlled Ventilation (DCV) in buildings, the Ventostat uses CO2 levels as an indicator of occupancy allowing ventilation based upon actual occupancy while still maintaining ASHRAE recommended per-person ventilation rates. By using any model of Telaire Ventostat Series carbon dioxide detector, over-ventilation of buildings can be reduced to save energy costs while still maintaining the highest standards of air quality. Typical applications for the Telaire Ventostat carbon dioxide detectors include office buildings, conference rooms, schools, retail space, restaurants, gymnasiums, and movie theaters.

The Ventostat uses non-dispersive infrared absorption sensor technology to provide high accuracy in a compact, low cost package. Telaire's patented ABC Logic self-calibration system eliminates the need for manual calibration in most applications making the units nearly maintenance-free. The Ventostat includes temperature sensors and a night setback override function that shorts the thermistor output, allowing local override of the building's automated control. 


This product can be used in the following applications: