Grove - Gas Sensor (MQ3) [Discontinued]

The Grove - Gas Sensor module is useful for gas leakage detecting(in home and industry). It can detect LPG, i-butane, methane, alcohol, Hydrogen, smoke and so on. Measurements can be taken as soon as possible based on its fast response time. Also the sensitivity can be adjusted by the potentiometer.

There are different gas detectors for sale, like MQ2, MQ3,MQ5andMQ9. Below is a contrast table of them.

Symbol	MQ-2	MQ-3	MQ-5	MQ-9
Detect Gas	Combustible Gas Smoke	Alcohol Vapor	LPG, Natural Gas, Town Gas	Carbon Monoxide, Coal Gas, Liquefied Gas
Detect Concentration	300-10000ppm	0.04-4mg/L Alcohol	300-10000ppm	10-1000ppmCO;100-10000PPm Gas

Features

• High sensitivity to Combustible gas in wide range
• Stable performance, long life, low cost
• Fast response
• Wide detection range
• Simple drive circuit
• Product number: Seeed 101020006

Resources

• Product Wiki
• Manual
• Preface - Getting Started
• Introduction to Grove

Notes

• Hot-swapping the grove may lead to IC burnout, please turn off the power of main board before swapping grove.