Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Brand	TELESKY
Model Number	MQ-5
Detectable Gases	Liquefied Gas, Natural Gas, City Gas
Operating Voltage	5V DC
Output Type	Digital Switch Output (TTL) and Analog Output
Preheat Time	24-48 Hours
Sensitivity Adjustment	Adjustable via Potentiometer
Interface	3-Pin Header (VCC, GND, DO)
Compatible Platforms	Arduino, Raspberry Pi, STM32
Package Includes	1 x MQ-5 Sensor Module

6 reviews

Anonymous

Mar 26, 2026

Rating: 5/5

Perfect for my home safety project

I used this sensor to build a gas leak detector for my kitchen. The analog output is very stable after the initial preheat time, and the digital threshold is easy to adjust with the onboard potentiometer. Highly recommended for DIY enthusiasts.

Anonymous

Mar 16, 2026

Rating: 5/5

Exceeded expectations

I was skeptical about the low price, but this TELESKY module works flawlessly. I integrated it with a Raspberry Pi to send alerts to my phone. It's now a permanent part of my home security system.

Anonymous

Mar 14, 2026

Rating: 5/5

Great for university projects

Used this for my final year engineering project on smart home safety. It interfaced seamlessly with my Arduino Uno. The sensitivity is impressive, and the price point is unbeatable for students.

Anonymous

Mar 14, 2026

Rating: 4/5

Good value but needs patience

The module works exactly as described. Just remember that it needs at least 24 hours of preheating before you get accurate readings. Once warmed up, it detects propane leaks instantly. Deducting one star only because the documentation could be better.

Anonymous

Mar 08, 2026

Rating: 5/5

Reliable detection

Bought two of these for a dual-sensor setup. Both responded consistently when tested with a small amount of natural gas. The build quality feels solid, and the pins are well-soldered.

Anonymous

Mar 05, 2026

Rating: 4/5

Solid performer

We use these in our workshop for educational kits. They are robust enough to handle beginner mistakes and provide consistent data. Make sure to provide a clean 5V power supply to avoid noise in the analog reading.

5 FAQ

Q: How do I calibrate the sensitivity threshold?

A: There is a blue potentiometer on the back of the module. Power the sensor in a clean air environment, then turn the screw until the digital indicator LED just turns off. This sets your baseline threshold.

Q: Does this module require an external library to work with Arduino?

A: No external library is strictly necessary. You can read the digital output using a standard digitalRead() function and the analog output using analogRead(). However, many users find community libraries helpful for calibration.

Q: Is the output voltage compatible with 3.3V logic boards?

A: The sensor heating element requires 5V. The digital output is TTL level which is generally 5V. If connecting to a 3.3V board like some Raspberry Pi GPIOs, please use a logic level converter to prevent damage.

Q: Can this detect carbon monoxide as well?

A: The MQ-5 is specifically optimized for Liquefied Gas, Natural Gas, and City Gas. For Carbon Monoxide detection, we recommend looking at our MQ-7 or MQ-9 sensor modules which are tuned for that specific gas.

Q: What is the exact preheat time required before the sensor is accurate?

A: For best results, we recommend a preheat time of 24 to 48 hours. While it may show readings sooner, the baseline stabilizes significantly after a full day of continuous power.

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