Adafruit ENS160 MOX GAS SENSOR BREAKOUT

The Adafruit ENS160 MOX gas sensor provides a reliable way to measure air quality without managing heater control or analog signals. It integrates multiple metal-oxide sensing and heating elements on one chip, plus an onboard microcontroller to handle measurement and I2C communication.

The ENS160 replaces the discontinued CCS811 and offers similar functionality with updated drivers. Libraries for Arduino and CircuitPython support reading raw resistance values as well as TVOC, eCO₂, and AQI outputs.

The sensor supports temperature and humidity compensation for improved accuracy. By providing external RH% data via I2C, the sensor can reduce variations caused by environmental changes.

Key features include:

• Detection of VOCs and oxidizing gases
• Support for up to 4 MOX sensors
• Integrated measurement and heater drive control
• Automatic Baseline Correction (ABC) and sensor fusion algorithms
• Multiple IAQ outputs: TVOC, eCO₂, AQI
• I2C and SPI interfaces (SPI not supported by libraries)
• Warm-up time <3 minutes, startup <1 hour
• High immunity to humidity and ozone
• I2C address 0x53 (fixed)

The breakout is designed in the STEMMA QT form factor, compatible with SparkFun Qwiic connectors for solderless connections and easy daisy-chaining. Onboard 3.3V regulator and level shifting allow use with both 3.3V and 5V systems.

Product Dimensions:

• Size: 25.4 mm x 17.6 mm x 4.5 mm
• Weight: 1.8 g

Packaging includes:

• Adafruit ENS160 MOX -Gas sensor module
• Pin header

Links:

• Product information page
• ENS160 Datasheet (PDF)