S8 Miniature CO2 Sensor

S8 Miniature CO2 Sensor
S8 Miniature CO2 Sensor
S8 Miniature CO2 Sensor
Click to enlarge.

  • SE-0119

  • SE-0037

  • CM-0177

For large quantities, please contact Sales@CO2Meter.com

Browse more CO2 Sensor or additional Senseair products.


• Ultra-small footprint NDIR Sensor
• Maintenance Free
• Low Power consumption

The S8 is a miniature CO2 sensor module that acts like a safety switch for control and alarm applications. The sensor can be integrated in a wide range of different alarm applications where you want to detect CO2, such as leakage detection.

The S8 Miniature CO2 Sensor is one of the smallest non-dispersive infrared (NDIR) sensor on the market. Thanks to a new optical path design, the S8 can accurately measure carbon dioxide levels up to 5%, yet it has less than a 30x20x10mm footprint and runs on only 30mA.

Two versions of the S8 are available. The 0-1% sensor is designed for residential applications, while the 0-5% sensor is designed for commercial applications. Both provide simple communication via UART which lets you change the measurement period and control the ABC (Automatic Background Calibration) period in real time. Background and zero-gas calibrations are also implemented in a simple manner.


The DevKit includes a sensor and custom USB cable to make it easy to test, write custom software, or for prototyping. You can talk to the sensor in minutes with our free GasLab® software available for download here.


  • CO2 Measurement: non-dispersive infrared (NDIR)
  • Measurement Range: 400-10,000ppm, 400-50,000ppm
  • Response time: 90% at 2 minutes
  • Measurement Interval: 2 seconds
  • Communication: UART Modbus
  • Sensor Life Expectancy: > 15 years
  • Maintenance Interval: no maintenance required
  • Self-Diagnostics: complete function check on startup

Electrical / Mechanical

  • Dimensions: 32.7 × 19.7 × 8 mm (LxWxH)  < 8 grams.
  • Power Input: 4.5-5.25 VDC
  • Power Consumption: 300mA peak, 30mA average


  • 90 days

CO2 Sensor Documention S8 1% Sensor Datasheet (pdf)

CO2 Sensor Documention S8 5% Sensor Datasheet (pdf)

CO2 Sensor Documention Modbus Communication Manual (pdf)

CO2 Sensor Documention Connecting to Raspberry Pi via UART (pdf)

 Raspberry Pi Sample Code (ZIP)

CO2 Sensor Documention Connecting to TI CC3200 WIFI via UART (pdf)