The MQ-8 Hydrogen Gas Sensor Module detects the presence and concentration of hydrogen (H2) gas in the air, making it perfect for leak-detection and safety projects. It gives an analog reading proportional to gas concentration plus a digital threshold output set by the on-board LM393 comparator and potentiometer.
Key Features
- Sensitive to hydrogen (H2) gas with fast response and recovery
- Both analog (AO) and digital (DO) outputs on one board
- Adjustable trigger threshold via on-board potentiometer
- LM393 comparator with power and output LEDs
- Works with Arduino, ESP32, ESP8266 and Raspberry Pi
Specifications
| Sensor | MQ-8 (SnO2 hydrogen) |
| Working voltage | 5V DC |
| Target gas | Hydrogen (H2) |
| Output | Analog (AO) + Digital (DO) |
| Detection range | ~100 – 10000 ppm |
Popular Project Ideas
- Hydrogen leak alarm system
- Battery-room and fuel-cell safety monitor
- Air-quality and gas-detection station
- IoT gas alert with buzzer and SMS
In stock at Arduino Corner, Rawalpindi with quick delivery to Islamabad and all over Pakistan. Ideal for STEM students, robotics clubs and FYP teams — pay by cash on delivery or online.
