CO2S-A (Ambient)

CO2S-A is an ultra-low power (3.5mW), high performance CO2 sensor, ideally suited for battery operation and portable instruments. Based on patented IR LED and Detector technology and innovative optical designs, CO2S-A is the lowest power NDIR sensor available. Optional temperature and humidity sensing are available.
With measurement ranges of 0-2000ppm, 0-5000ppm and 0-1% the CO2S-A Ambient Sensor is suitable for applications such as Building Management and Horticulture.
Unlike Electrochemical Sensors the CO₂ sensors connect to customers systems using the TTL-Level RS232 protocol. This removes the need for A to D conversion.

  • Low Power Consumption 3.5mW
  • Battery Operated 3.3V
  • Measurement ranges from 0 to 2000ppm, 5000ppm or 1%
  • Auto calibration
  • Compatible with wireless communications
  • Minimal power-up time
  • Standard digital output
  • Years of battery life
  • Low noise measurement (<10ppm)


  • Modified atmospheres
  • Indoor air quality/ventilation management e.g. classroom monitoring
  • Confined spaces e.g. Industrial plant rooms, cellars, gas stores, mining, cryogenics
  • Stowaway detection
  • Greenhouses
  • Landfill gas
  • Domestic boilers
  • Incubators