Adafruit
Adafruit ENS160 MOX Gas Sensor - Sciosense CCS811 Upgrade
The Adafruit ENS160 is a fully integrated metal-oxide (MOX) gas sensor from ScioSense, designed as a drop-in upgrade for the now-discontinued CCS811. It comb...
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The Adafruit ENS160 is a fully integrated metal-oxide (MOX) gas sensor from ScioSense, designed as a drop-in upgrade for the now-discontinued CCS811. It combines multiple MOX sensing and heating elements on a single chip to provide detailed air quality readings including TVOC (Total Volatile Organic Compounds) and eCO2 (equivalent CO2) over I2C.
The ENS160 includes an on-chip microcontroller that manages the MOX heater plate and analogue-to-digital conversion, delivering processed air quality data directly over I2C. It also supports temperature and humidity compensation — feed in readings from an external humidity sensor for improved accuracy in varying environmental conditions.
Key Features
- Multi-Element MOX Sensor – Multiple metal-oxide sensing elements for detailed air quality analysis
- TVOC and eCO2 Output – Processed volatile organic compound and equivalent CO2 readings
- Raw Resistance Values – Access to four raw resistance readings for custom analysis
- Temperature/Humidity Compensation – External RH% input for improved accuracy
- CCS811 Upgrade – Replacement for the discontinued ScioSense CCS811 (new driver code required)
- I2C Interface – Simple digital communication with on-chip signal processing
- STEMMA QT / Qwiic – Dual I2C connectors for solderless daisy-chaining
- 3.3V and 5V Compatible – On-board voltage regulator and level shifting
Ideal For
- Indoor air quality monitoring
- HVAC and ventilation control systems
- Environmental sensing and data logging
- Upgrading existing CCS811-based designs
Package Contents
- 1× Adafruit ENS160 MOX Gas Sensor Breakout – STEMMA QT
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- Qwiic
- Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.
- STEMMA
- A plug-and-cable connection system used on some maker electronics boards to make wiring simpler. If a product uses STEMMA, you need the matching cable or connector type to plug it in without soldering.
- STEMMA QT
- A small plug-in connector system for I2C boards that lets you connect compatible sensors and controllers without soldering. It matters because it can make wiring faster and less error-prone, especially when adding several small modules to a project.
- VOC
- Volatile organic compounds are gases released from things like paints, cleaners, smoke, and some plastics. A VOC reading helps indicate indoor air quality, but it is usually an index or estimate rather than a direct identification of each chemical.
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