A
Anonymous
Feb 28, 2026
Rating: 4/5
Good value
Needs some calibration time but works as expected for the price.
Description
MQ-8 Hydrogen Gas Detection and Alarm Module, Gas Sensor Module, High Sensitivity MQ8
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Power Supply | 5V DC |
| Output Signal | Digital Switching (0/1) and Analog |
| Detection Gas | Hydrogen (H2) |
| Sensitivity | Adjustable via Potentiometer |
| Response Time | Less than 10 seconds |
| Recovery Time | Less than 30 seconds |
| Operating Temperature | -10°C to 50°C |
| Storage Humidity | Less than 95% RH |
| Board Dimensions | 32mm x 22mm x 15mm |
| Pin Interface | 2.54mm Pitch Header |
5 reviews
A
Anonymous
Feb 17, 2026
Rating: 5/5
Works well
Good for Arduino projects. Detected hydrogen reliably during testing.
A
Anonymous
Feb 11, 2026
Rating: 5/5
Reliable
Used in our classroom electronics kit. Students found it easy to use.
A
Anonymous
Feb 08, 2026
Rating: 5/5
Fast response
Happy with purchase. Response time is quick enough for my prototype.
A
Anonymous
Feb 05, 2026
Rating: 3/5
Okay sensor
Documentation was a bit confusing for beginners. Sensor works though.
5 FAQ
Q: How long does calibration take?
A: Typically 24-48 hours for full stabilization, but basic use works sooner.
Q: Where can I find the pinout diagram?
A: The pinout is included in the datasheet available on the product page.
Q: Can this detect methane gas?
A: No, this is tuned for Hydrogen. Please use the MQ-4 model for methane.
Q: Is this module waterproof?
A: No, it should be housed in a weatherproof enclosure for outdoor use.
Q: Is this compatible with 3.3V logic systems?
A: Yes, but we recommend using a level shifter for optimal performance.
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