🔍 Product Overview

The MQ-8 Hydrogen Gas Sensor Module is a high-sensitivity detection board designed specifically for sensing hydrogen gas (H₂) and natural-gas leakage. It provides both analog and digital outputs, enabling you to monitor varying concentrations or trigger alarms when thresholds are exceeded.

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🚀 Why It’s Ideal for Your Projects

• High sensitivity to hydrogen — Built to reliably detect H₂ concentrations, making it perfect for safety systems, fuel-gas monitoring, or industrial leak detection.

• Dual-mode output flexibility — The analog output gives you a proportional voltage corresponding to gas concentration, while the digital output triggers when a user-set threshold is crossed.

• Arduino-/microcontroller-friendly — Operates at 5 V and interfaces easily with boards like Arduino, ESP32, or Raspberry Pi (via an ADC), enabling IoT integration, alarms, or telemetry.

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📝 Key Features

• Designed for hydrogen (H₂) detection, with lower sensitivity to alcohol, LPG, and other gases.

• Typical detection range spans from about 100 ppm up to 10,000 ppm (depending on configuration).

• Supply voltage: 5 V DC, with standard module output of analog voltage (0–5 V) and digital TTL output.

• On-board potentiometer allows you to fine-tune the digital trigger threshold.

• Simple wiring: connect VCC, GND, analog output pin and digital output pin for easy integration.

• Suitable for continuous monitoring in gas-sensitive environments.

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🎯 Typical Applications

• Hydrogen-leak detectors – Install near fuel cells, hydrogen tanks, or pressurized systems.

• Safety automation systems – Use in industrial or laboratory settings to trigger ventilation or alarms when hydrogen is detected.

• IoT connected monitoring – Integrate into smart-gas networks to send alerts or log data when H₂ levels exceed safe limits.

• Educational or DIY projects – Excellent for hobbyists learning about gas sensors, analog readings and environmental monitoring.

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✅ Why You’ll Love It

The MQ-8 module gives you an accessible and reliable way to incorporate hydrogen-gas detection into your build. With its dual outputs, easy microcontroller compatibility, and sensitivity tuned for hydrogen rather than more common gases, it’s an excellent choice for both safety-oriented and hobbyist projects.