MQ-8 Hydrogen Gas Sensor Module for H2 Detection | Compoden
MQ-8 Hydrogen Gas Sensor Module — Detects H2, LPG, Alcohol
The MQ-8 is a semiconductor gas sensor module designed to detect hydrogen (H2) concentrations. It is also sensitive to LPG and alcohol vapours. Ideal for DIY gas leak alarms and industrial hydrogen detection.
Key Specifications
| Specification | Value |
|---|---|
| Operating Voltage | 5V DC |
| Heater Consumption | ~150mA |
| Detection Range | 100~10000ppm H2 |
| Output | Analog voltage (0-5V) |
| Warm-up Time | 20 seconds |
| Sensitivity | Adjustable via potentiometer |
What You Can Build With This
- Hydrogen leak alarm for battery rooms
- DIY breathalyzer (alcohol tester)
- Kitchen gas leak detector
- Portable air quality monitor
Compatibility
Works with 5V microcontrollers like Arduino Uno, Mega, NodeMCU. Raspberry Pi requires an external ADC. Common pairings include Arduino for analog reading.
Wiring Notes
Connect VCC to 5V, GND to ground, and AOUT to an analog input pin. The sensor draws ~150mA; ensure adequate power. Allow 20-second preheat for stable readings.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
Yes, it outputs an analog signal readable by any Arduino analog input pin. Works directly with 5V microcontrollers.
Can it detect other gases?
It is primarily for hydrogen but cross-sensitive to LPG and alcohol; not suitable for precise multi-gas measurements.
How long does it last?
Typical lifetime is about 5 years in clean air, longer if rarely exposed to high gas concentrations.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items