SenseAir tSense CO2 detector

Part Numbers:

ESSE-34: CO2, temperature and humidity detector with no LCD display

ESSE-35: CO2, temperature and humidity detector with LCD display


  • CO2Meter tSense largeCO2, Temperature, % Relative Humidity
  • Easy Configuration via LCD Touch Screen
  • All Industry-Standard Outputs
  • 5 Years Warranty


SenseAir’s tSense CO2, humidity and temperature sensor is a high class, European designed and manufactured solution for quality HVAC monitoring. It is available with or without an LCD color touch screen display.

With a display, the tSense can show you the CO2, temperature or %RH levels in real-time. With a touch you can program the tSense display model to change color when the CO2, temperature or %RH levels get too high, or you can view graphs of CO2, temperature or %RH for the previous day or week. All settings can be controlled with a secret pin number you enter during setup.

With or without a display, both tSense models feature several industry-standard output options including 0-10VDC for each of the 3 parameters, NO and NC relays, Modbus and BACnet. All options can be configured with the free UIP software.



Download tSense Manual

Download tSense Installation Guide



  • NDIR CO2 + Temperature & Humidity
  • 0-2,000 ppm CO2, 0-50°C, ±5% RH
  • Accuracy (CO2): ±30ppm ±3% of reading
  • Dimensions: 125mm x 85mm x 22mm
  • Dimensions (display): 49mm x 37mm
  • Life expectancy: >15 years
  • Operation temperature:  0 – 50°C
  • Sensor Life Expectancy: 15 years
  • ABC (Automatic Background Calibration) is enabled but can be used programmed/disabled



  • OUT1 CO2 0-10VDC, 0-2000ppm
  • OUT2 Temperature 0-10VDC, 0-50°C
  • OUT3 Relative Humidity 0-10VDC, 0-100%RH
  • Modbus/BACnet over RS485
  • Programmable Relay


Electrical Requirements

  • 12VDC / 24 VAC/VDC



  • 5 Years

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