Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Detection Gas | Methane (CH4), Ethane, Propane, Natural Gas |
| Output Signal | TTL Level / UART Serial Output |
| Operating Voltage | 5.0V ± 0.2V DC |
| Detection Range | 0 - 100% LEL (Lower Explosive Limit) |
| Response Time | Less than 30 seconds |
| Preheat Time | Approximately 3 minutes |
| Operating Temperature | -10°C to 50°C |
| Storage Temperature | -20°C to 60°C |
| Dimensions | 32mm x 22mm x 20mm |
| Interface Type | 4-Pin Header (VCC, GND, TX, RX) |
Anonymous
Mar 28, 2026
Rating: 4/5
Good value, requires calibration
The sensor works well out of the box, but I recommend running a fresh air calibration cycle before deployment for accurate readings. The build quality is solid for the price point. Response time is as advertised.
Anonymous
Mar 27, 2026
Rating: 5/5
Sensitive and fast
Very impressed with the sensitivity. I tested it with a controlled release of propane, and the alarm triggered via my microcontroller almost instantly. Ensure you let it warm up fully before relying on the data.
Anonymous
Mar 23, 2026
Rating: 3/5
Works but gets warm
The sensor functions correctly and detects gas accurately. However, the heating element inside gets quite hot to the touch, which is normal for this type of semiconductor sensor, but something to keep in mind for enclosure design.
Anonymous
Mar 17, 2026
Rating: 5/5
Perfect for my home safety project
I integrated this module into a custom Raspberry Pi home monitoring system. The serial output is clean and easy to parse. It detected a small gas leak from a loose fitting during testing immediately. Highly recommended for DIY enthusiasts.
Anonymous
Mar 17, 2026
Rating: 5/5
Reliable detection
Using this to monitor biogas production in my small scale digester. It provides consistent readings and hasn't drifted much over the last two months. The voltage requirements are standard which makes wiring easy.
Anonymous
Mar 06, 2026
Rating: 4/5
Great for university projects
Bought this for a final year engineering project on IoT safety systems. Documentation could be slightly more detailed regarding the protocol specifics, but community forums helped fill the gaps. Works great with Arduino.
Q: Can this sensor detect carbon monoxide as well?
A: No, this specific module is optimized for combustible gases like Methane, Propane, and Ethane. For Carbon Monoxide detection, please look at our dedicated CO sensor models.
Q: Does this come with an enclosure or is it just the bare board?
A: This listing is for the bare module board only. It does not include an enclosure. You will need to design or purchase a separate case that allows for airflow to the sensor head.
Q: Is a library available for Arduino?
A: Yes, there are several open-source libraries available on GitHub compatible with this generic CH4 sensor module. We provide a sample code snippet in the product manual to get you started quickly.
Q: How often does the sensor need to be replaced?
A: Under normal operating conditions, the sensor life is typically 2 to 3 years. Lifespan may vary depending on exposure to high concentrations of gas or silicone vapors which can poison the sensor.
Q: What is the communication protocol used for the output?
A: The module uses a standard UART TTL serial interface. You can read the concentration data by connecting the TX pin to your microcontroller's RX pin and parsing the serial stream at 9600 baud.
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