MQ-2 Gas Sensor Module for Arduino, LPG, Smoke and Methane Detection with Analog and Digital Output

This MQ-2 gas sensor detects gases like LPG, methane, propane, hydrogen, and smoke, and sends the reading to your Arduino or other microcontroller. Connect the pins, upload a short sketch, and your project can sense a change in the air around it.

Where You Can Use an MQ-2 Gas Sensor

It is a popular module for gas leak alarms, smoke detector projects, kitchen safety demos, and air quality experiments. The board gives both analog and digital output, so you can read the gas level or simply get a yes or no signal. A small knob lets you set the sensitivity. The sensor needs a short warm-up time after power-on to give stable readings. It is meant for hobby and learning projects, so please do not use it as a replacement for a certified gas alarm.

Product Highlights

• Gas and smoke detection module for LPG, methane, propane, and hydrogen
• Analog and digital output
• Adjustable sensitivity with an onboard knob
• Works with Arduino and other microcontrollers
• Good for gas leak alarm and smoke detector projects