Detect Gas Changes with a Practical Air Sensor

The Adafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout is a gas sensor designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.

Key details include Product Dimensions: 20.0mm x 12.7mm x 3.1mm / 0.8" x 0.5" x 0.1"; Product Weight: 0.9g / 0.0oz; Category: gas sensors.

Why you’ll love it

• Maker-friendly build: Easy to use in prototypes, classroom projects, and custom electronics
• Common controller support: Works well with Arduino, ESP32, Raspberry Pi, and similar boards
• Project-ready sensing: air-quality projects, leak alerts, and ventilation monitoring

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What you can build

This sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.

Starter bundles

Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard or jumper wires for quick setup and testing.

Recommended add-ons

Useful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.

Technical specifications

Wiring & usage notes

Check the pin labels on the Adafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.

What’s in the box

1 × Adafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout

Frequently Asked Questions