More than 30 years experience of research and development within the field of infrared gas sensing has brought us our smallest NDIR CO2 sensor. The sensor has excellent performance such as high accuracy and low power consumption.

Defining attributes

  • Low power consumption
  • Miniature size
  • Individually calibrated
  • Maintenance free
  • Long term stability

Senseair S8 sensors are designed for mass production with full traceability by sensor serial number on all manufacturing processes and key components. Every sensor is individually calibrated and is provided with UART digital interface. The sensor is maintenance-free and has an estimated life time of more than 15 years.


It comes in a few different variations, the residential variation intended for residential IAQ applications, a commercial variation for stricter compliances and a low power version for applications with power limitations.

Article number 004-0-0053
Operating principle Non-dispersive infrared (NDIR)
Measured gas CO₂
Measurement range 0 - 10,000 ppm
Accuracy ±40 ppm ±3% of reading
Operating range RH <85 % RH
Operation range °C <50 °C
Warm-up time TBA
Response time 2 min by 90%
Power supply 4.5 - 5.25 V
Peak current 300 mA
Average current 18 mA
Communication Modbus protocol, UART
Outputs TBA
Compliance TBA
Maintenance Maintenance free
Life expectancy >15 years
Dimensions 33.9 x 19.8 x 8.7 mm (L x W x H)
Weight 8 g
Storage conditions -40-70 °C
Article number Product Description
004-0-0050 S8 2% Miniature, low power and versatile sensor for CO₂ sensing.
004-0-0013 S8 Residential Miniature, low power and versatile sensor for CO₂ sensing.
004-0-0053 S8 Miniature, low power and versatile sensor for CO₂ sensing.
004-0-0056 Senseair Residential For connection by pin headers (for ventilation control and CO2 monitoring)
004-0-0017 S8 5% For connection by pin headers (for control and alarm applications)
Product Product number
Evaluation Kit / SADK 00-0-0101