MICS6814 3-in-1 Gas Sensor Breakout (CO, NO2, NH3)

Measure changes in the concentration of gases including carbon monoxide (CO), nitrogen dioxide (NO2), and ammonia (NH3) with this Breakout Garden compatible I2C breakout.

The MICS6814 sensor comprises three semiconductor gas sensors in a single package and can detect three different groups of gases referred to as reducing, oxidising, and NH3. Major gases detected include carbon monoxide (reducing), nitrogen dioxide (oxidising), and ammonia (NH3), with sensitivity to hydrogen, ethanol, and hydrocarbons as well.

This breakout allows qualitative measurement of gas concentration changes, useful for indoor and outdoor air quality monitoring, agricultural and vehicle pollution monitoring.

The sensor features a Nuvoton microcontroller for I2C and analog-digital conversion, sensor heater control, and a user-controllable RGB LED for status indication or gas concentration alert.

This board is Breakout Garden compatible, requiring no soldering to connect to Breakout Garden HATs or pHATs. Compatible with Raspberry Pi, Raspberry Pi Pico, and supports Python, C++, and MicroPython libraries.

Features

• MICS6814 analog gas sensor with datasheet and FAQ available
• Nuvoton MS51XB9AE MCU
• RGB LED for status indication
• 2x M2.5 mounting holes
• I2C interface with default address 0x19
• 3V to 5V compatible
• Reverse polarity protection
• Raspberry Pi-compatible pinout (pins 1, 3, 5, 7, 9)
• Compatible with Raspberry Pi and Pico including libraries
• Schematic and dimensional drawing available

Kit Includes

• MICS6814 Gas Sensor Breakout
• 1x5 straight male header
• 1x5 right angle female header

Specifications

• Dimensions: approx 23 x 20 x 4 mm (L x W x H)
• I2C default address: 0x19
• Voltage: 3V to 5V

Software

Python, C++, and MicroPython libraries with examples are available to control the sensor and LED.