Sensirion STC31-R3, Carbon Dioxide Gas Sensor IC for CO Detectors

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Subtotal (1 unit)*

£31.66

(exc. VAT)

£37.99

(inc. VAT)

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  • Final 189 unit(s) shipping from 29 October 2025
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Packaging Options:
RS Stock No.:
205-7754
Mfr. Part No.:
STC31-R3
Brand:
Sensirion
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Brand

Sensirion

Gases Detected

Carbon Dioxide

Application

CO Detectors

Sensor Type

Gas Sensors

Minimum Operating Temperature

-20 °C

Maximum Operating Temperature

85 °C

Model Number

STC31

The environmental STC31 CO2 Gas sensor is part of the Sensirion STC3x sensor family. The gas concentration sensors are designed for high-volume accurate CO2 measurements. CMOSens® Technology combines the sensor element, signal processing and digital calibration on a small CMOS chip perfect for mass production.

The Sensirion CO2 gas sensor operates a thermal conductivity measurement principle, resulting in high reliability and long-term stability. Featuring a digital I2C interface making it easy to connect directly to a microprocessor. The thermal conductivity technology has an ultra-low power consumption, ideal for battery-operated applications.

The SEK-STC31 Evaluation kit, is also available see RS 205-7756 which includes 1 x STC31 Sensor module, 1 x SHTC3 on FPCB, 1 x RJ45 adapter cable (1m length).
SensorBridge is available separately see 195-0680

High reliability and long-term stability
Best signal-to-noise ratio
Industry-proven technology with a track record of more than 15 years
Designed for mass production
High process capability

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