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Series T8041 & T8042 Duct Mount CO2 Transmitter

The Ventostat® T8041 duct mount CO2 transmitter offers accuracy and versatility at an affordable price. This exceptional product line touts an unobtrusive form factor that is easy to install, simple to use, and remains accurate over the expected life of the device using Telaire’s patented ABC Logic™ (Automatic Background Calibration) technology.


  • Simple installation (mounting hardware and instructions included)
  • Ideally suited for larger HVAC return air ducts
  • Offers standard 0-10 volt output Patented absorption infrared/gas sensing engine provides high accuracy in a compact low-cost package
  • Patented ABC Logic™ self-calibration system eliminates the need for manual calibration in most applications
  • Gas permeable, water resistant diffusion filter prevents particulate and water contamination of the sensor
  • Lifetime calibration guarantee
  • Two probe lengths avaliable