Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Brand | TELESKY |
| Model Number | MQ-7 |
| Detection Target | Carbon Monoxide (CO) |
| Operating Voltage | 5V DC |
| Output Signal | Analog & Digital Switch |
| Pin Configuration | 4-Pin Header (VCC, GND, DO, AO) |
| PCB Dimensions | 32mm x 20mm x 15mm |
| Net Weight | 8 grams |
| Operating Temperature | -10°C to 50°C |
| Recommended Application | DIY Electronics & Prototyping |
Anonymous
Apr 04, 2026
Rating: 5/5
Perfect for learning
Great educational tool for understanding gas sensors. I do not use it for safety alarms, but for data logging it performs well. Good value for the price.
Anonymous
Mar 11, 2026
Rating: 3/5
Needs warmup time
Functionality is fine but be aware it requires a significant burn-in time before accurate readings are possible. Documentation could be more detailed on this process.
Anonymous
Mar 02, 2026
Rating: 5/5
Fast delivery
Arrived well packaged. The soldering points are clean and the component looks durable. Perfect for my home automation prototype.
Anonymous
Mar 02, 2026
Rating: 5/5
Works great with Arduino
I used this for a school project to monitor air quality. It connected easily to my Uno board and the analog readings were consistent after the initial warm-up period.
Anonymous
Jan 28, 2026
Rating: 4/5
Good sensitivity
The module is sensitive enough to detect gas from a lighter for testing purposes. The potentiometer makes it easy to adjust the digital threshold. Just note it needs power for a while before stabilizing.
Q: Can this detect natural gas or propane?
A: This MQ-7 model is optimized for Carbon Monoxide. For natural gas or propane, we recommend looking at the MQ-5 or MQ-6 models.
Q: What is the current consumption during operation?
A: The heating element typically draws around 150mA. Please ensure your power supply can handle this load during the heating cycle.
Q: Is this certified for use in a residential safety alarm?
A: No, this module is intended for educational and prototyping purposes only. For residential safety, please use certified commercial alarm devices.
Q: How do I adjust the sensitivity threshold?
A: There is a blue potentiometer on the board. Rotate it while exposing the sensor to gas to set the point where the digital output pin switches state.
Q: Does this module require a specific library for Arduino?
A: No specific library is required. You can read the analog pin directly, though many open-source MQ sensor libraries are available to help with calibration.
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