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The Adafruit ENS161 MOX Gas Sensor - STEMMA QT / Qwiic by Adafruit is a mid-range gas sensors designed for everyday users. It features Item Type: MOX (Metal Oxide) Gas Sensor and Model No. / Name: ENS161.
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About This Product
The Adafruit ENS161 MOX Gas Sensor - STEMMA QT / Qwiic by Adafruit is a mid-range gas sensors designed for everyday users. It delivers reliable performance at an accessible price.
Key Specifications
- Item Type: MOX (Metal Oxide) Gas Sensor
- Model No. / Name: ENS161
- Operating Voltage (V): 3.3V / 5V (Onboard regulated) — works with standard household power
- Current consumption: 12 mA (Standard Mode)
- Operating Temperature (°C): -40 to +85
- Standard Encapsulation: LGA Package
- Sensing technology: Metal Oxide (MOX)
- Detection Gas: VOCs including ethanol, hydrogen, toluene
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Adafruit ENS161 MOX Gas Sensor – STEMMA QT / Qwiic is a compact, fully integrated digital air-quality sensor based on advanced MOX technology. Designed by ScioSense, it combines four metal-oxide sensing elements with an onboard controller to deliver reliable indoor air-quality insights. With built-in processing, it directly outputs eCO2, TVOC, and Air Quality Index values over I2C, eliminating the need for complex heater control or analog signal handling.
The STEMMA QT / Qwiic connectors make solder-free connections easy, while onboard voltage regulation and level shifting ensure compatibility with both 3.3V and 5V systems. Ideal for IoT, smart home, and educational projects, this sensor helps track air-quality trends accurately when properly calibrated.
Features:
- Fully integrated MOX gas sensor with onboard processing
- Outputs eCO2, eTVOC, AQI-U, and AQI-S values
- Four independent metal-oxide sensing elements
- I2C digital interface with STEMMA QT / Qwiic support
- Built-in heater control and signal algorithms
- Supports temperature and humidity compensation
- Compatible with 3.3V and 5V microcontrollers
- Compact breakout PCB with standard header pins
Package Includes:
1 x Adafruit ENS161 MOX Gas Sensor - STEMMA QT / Qwiic
1 x Header Pin
