Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	MQ-5
Detection Gas	LPG, Natural Gas, City Gas
Operating Voltage	5V DC
Output Signal	Digital Switch Output (0 and 1) & Analog Output
Sensitivity	Adjustable via Potentiometer
Preheat Time	24-48 Hours
Working Temperature	-10°C to 50°C
Humidity Range	Less than 95% RH
Pin Count	4 Pins (VCC, GND, DO, AO)
Board Dimensions	32mm x 20mm x 15mm

6 reviews

Anonymous

Mar 23, 2026

Rating: 4/5

Good value but needs warm-up

Great sensor for the price. Just remember that it needs a long preheat time (about 24 hours) before the readings become accurate. Once warmed up, it detects LPG very quickly.

Anonymous

Mar 15, 2026

Rating: 4/5

Easy to interface

The pinout is standard and makes wiring very simple. The documentation provided by the seller was helpful. Deducting one star because the soldering on the pins could be slightly cleaner.

Anonymous

Mar 12, 2026

Rating: 5/5

Perfect for my home safety project

This sensor module works exactly as described. I integrated it with an Arduino to monitor gas levels in my kitchen prototype. The analog output is stable, and the digital threshold is easy to adjust with the onboard potentiometer.

Anonymous

Mar 10, 2026

Rating: 5/5

Essential for IoT projects

Bought five of these for a classroom project on smart homes. All units performed consistently. Students were able to calibrate them easily using the trimmer pot.

Anonymous

Mar 07, 2026

Rating: 5/5

Reliable detection

I tested this with a small amount of natural gas leak simulation, and the LED indicator triggered immediately. It's a solid component for any DIY gas alarm system.

Anonymous

Mar 05, 2026

Rating: 3/5

Works well but consumes power

The sensing capability is good, but note that the heating element draws a fair amount of current. Not ideal for battery-powered projects unless you put it to sleep periodically.

5 FAQ

Q: Does this module come with a cable or headers?

A: The module comes with male header pins already soldered. Cables are not included but can be purchased separately.

Q: What is the difference between the DO and AO pins?

A: AO (Analog Output) provides a voltage proportional to the gas concentration, while DO (Digital Output) acts as a switch that goes high or low when a threshold is crossed.

Q: Is this sensor suitable for outdoor use?

A: While it can function outdoors, the module is not weatherproof. We recommend placing it inside a ventilated enclosure to protect it from rain and direct sunlight.

Q: Can this sensor detect methane specifically?

A: Yes, the MQ-5 is sensitive to natural gas which primarily consists of methane, as well as LPG and city gas.

Q: How long does it take to ship to New York?

A: Standard shipping to New York typically takes 5-7 business days. Express options are available at checkout for faster delivery.

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