aSense CO2 & CO HVAC transmitter

  • CO2Meter aSense-ESSE-114_1CO2 and CO Combined
  • Ideal for Auto Repair Shops, Garages and Car Parks
  • Enclosed Arenas


The ESSE-114 aSense MIII combines carbon dioxide and carbon monoxide sensors in a single package. It measures CO and CO2 in real time, and can use the levels to trigger an alarm, turn on a ventilation fan, or return the values to a HVAC system. All the functions can be set in software.

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  • State-of-the-art NDIR technology measures CO2
  • Internal automatic self diagnostics
  • Indicator light for normal, elevated, and alarm conditions
  • Internal relay to run alarm, vent fan or duct actuator
  • Conforms to OSHA specifications
  • Maintenance free – no calibration required



  • 0-10,000ppm CO2, 0-100ppm CO
  • Output: 0-10VDC CO, 0-10VDC CO2 (4-20 mA with jumpers)
  • Relay, Closed: <30ppm CO, <1400ppm CO2
  • Relay, Open: >35ppm CO, >1500ppm CO2
  • Programmable thresholds
  • Modbus



  • 24 volts AC/DC (Optional International Wall Adapter available if needed depending on electrical supply
  • IP54 housing designed for outdoor use (NEMA 3S equiv.)
  • HxWxD: 142 × 84 × 46 mm



  • 1 year
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