MQ-8 Hydrogen Gas Sensor Module for H2 Detection
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MQ-8 Hydrogen Gas Sensor Module for Precise H2 Detection
Upgrade your gas detection capabilities with the MQ-8 Hydrogen Gas Sensor Module designed for precise H2 detection. Operating at DC 5V with 150 mA power consumption, this sensor provides TTL digital output for efficient monitoring. Utilizing tin dioxide (SnO2) for clean air conductivity, it excels in detecting hydrogen-containing gases like city gas.
With high sensitivity and reliable performance, this sensor is ideal for various industrial applications requiring accurate hydrogen detection. Compatible with Arduino, Raspberry Pi, STM32, ESP32, and generic microcontroller stacks via the analog and digital output pins.
Typical Applications
- Battery room H2 monitoring — lithium-ion / lead-acid battery banks producing H2 in fault conditions.
- Industrial gas leak detection — H2-using processes (welding, chemical, refineries).
- Fuel cell monitoring — H2 leak detection around fuel cell installations.
- City gas leak detection — natural gas networks with hydrogen blends.
- Educational electronics projects — teaching gas sensing with H2-specific sensor.
MQ-8 Specifications
| Feature | Specification |
|---|---|
| Part Number | MQ-8 |
| Detection Target | Hydrogen (H2) gas + hydrogen-containing gases (city gas) |
| Sensing Element | Tin dioxide (SnO2) |
| Input Voltage | DC 5V |
| Power Consumption | 150 mA |
| Digital Output (DO) | TTL digital (0 = 0.1V / 1 = 5V) |
| Analog Output (AO) | 0.1 – 0.3V relative to concentration |
| Compatibility | Arduino / Raspberry Pi / STM32 / ESP32 / generic MCU |
| Condition | Brand New |
FAQ — MQ-8 Hydrogen Sensor
Q: MQ-8 vs MQ-2 vs MQ-7 — different gas targets?
A: MQ-2 = multi-gas (LPG / methane / smoke). MQ-7 = CO. MQ-8 = hydrogen-specific. Pick by target gas. For multi-gas monitoring, combine MQ-8 with MQ-2 / MQ-7 / MQ-135 for triple/quad coverage.
Q: How long does burn-in take?
A: MQ family sensors need a 24-hour initial burn-in for best stability. After that, typical warm-up before reading is 1-3 minutes from cold start. For always-on monitoring (battery rooms, leak detectors), run the heater continuously.
Q: Can I use it for commercial / life-safety H2 detection?
A: No — the MQ-8 is suitable for hobbyist, educational, and indicative monitoring. For commercial / industrial / life-safety H2 detection, use certified gas detectors with regulatory approval (UL, CE-rated, ATEX for explosive atmospheres).
Q: Bulk pricing for production runs?
A: Yes — email contact@lys-sz.com with your quantity for tier pricing on MQ-8 modules.
Related products
- MQ-2 Gas Sensor Module – Multi-Gas
- MQ-7 CO Gas Sensor Module
- MQ-135 Air Quality Gas Sensor
- ESP32-CAM WiFi Bluetooth Dev Board
OEMs / educational kit makers stocking MQ-8 modules? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouses.
Buying in bulk for a mining farm or repair shop?
Get dedicated B2B pricing on this part and across our full catalog — quote response within 24 hours, payment by T/T USD bank wire, and DDP delivery available for US & EU customers (and other lanes on request).
