MQ-8 Hydrogen Gas Sensor Module

MQ-8 Gas Sensor Module detects hydrogen (H₂) gas with high sensitivity and fast response. Ideal for hydrogen leak detection, gas monitoring systems, and Arduino-based IoT safety projects.

Technical Specifications:

1. Operating Voltage: 5V DC
2. Detectable Gas: Hydrogen (H₂)
3. Output Type: Analog & Digital
4. Detection Range: 100 ppm – 10,000 ppm
5. Response Time: < 10 seconds
6. Preheat Time: 20 seconds
7. PCB Size: Approx. 32 mm × 22 mm

The MQ-8 Hydrogen Gas Sensor Module is designed for accurate and reliable detection of hydrogen gas (H₂) concentrations in the air. It uses a SnO₂ (tin dioxide) sensing material that changes its electrical resistance when exposed to hydrogen gas, providing a signal proportional to gas concentration.

This module offers both analog and digital outputs, allowing seamless interfacing with Arduino, ESP32, NodeMCU, and Raspberry Pi. It features an onboard potentiometer to fine-tune sensitivity, making it suitable for a wide range of gas leak detection and safety monitoring systems.

Compact, efficient, and durable — the MQ-8 is a go-to choice for developers and students working on hydrogen detection, IoT-based monitoring, and industrial safety applications.

🧠 Features:

1. High sensitivity and selectivity for hydrogen gas
2. Fast response and stable performance
3. Adjustable detection threshold using onboard potentiometer
4. Dual output: Analog and Digital
5. Easy integration with Arduino, ESP32, or other controllers
6. Long lifespan and reliable operation

📦 Applications:

1. Hydrogen gas leakage detection
2. Industrial and laboratory gas monitoring
3. Smart IoT-based hydrogen safety systems
4. Portable hydrogen detectors and alarms