Looking for Hydrogen Module? MQ-8 Hydrogen Gas Sensor Module H2 Alarm Detection is available at Zbotic with fast shipping across India.
MQ-8 Hydrogen Gas Sensor Module H2 Alarm Detection
The MQ-8 Hydrogen Gas Sensor Module is designed for sensitive detection of hydrogen gas (H₂) and operates using low-conductivity tin oxide (SnO₂) in clean air. The sensor’s conductivity increases in response to rising concentrations of combustible gases, enabling effective monitoring.
A simple circuit converts changes in gas concentration into corresponding output signals. The MQ-8 sensor is highly sensitive and performs well in detecting various hydrogen-containing gases.
This versatile sensor can detect a wide range of hydrogen gas, including city gas, and is a cost-effective solution for various applications. It is suitable for use in home or industrial hydrogen leakage monitoring systems and does not interfere with ethanol vapor, soot, carbon monoxide, or other gases.
Features
Using high-quality dual-panel design, with power indicator and TTL signal output instructions.
The switching signal having a DO (TTL) output and analog output AO.
TTL output valid signal is low. ( Low-level signal when the output light can directly connect to the microcontroller or relay module )
The higher the voltage, the concentration of the analog output voltage is higher.
A hydrogen gas detection with good sensitivity.
There are four screw holes for easy positioning.
Has a long life and reliable stability
Rapid response and recovery characteristics
Specifications:
Operating Voltage (VDC):
5
Current Consumption(mA)
150
Do output
TTL digital 0 and 1 ( 0.1 and 5V)
Ao output
0.1-0 .3 V (Relative to Pollution )
Length (mm):
32
Width (mm):
20
Height (mm):
21.5
Weight (g):
7
Package Includes
1 x MQ-8 Hydrogen Gas Sensor Module H2 Alarm Detection
MQ-8 Hydrogen Gas Sensor Module H2 Alarm Detection Overview
The MQ-8 Hydrogen Gas Sensor Module H2 Alarm Detection is a compact detection board designed to monitor hydrogen gas concentrations in air. It provides both a digital TTL output for alarm signaling and an analog voltage output proportional to hydrogen levels, making it ideal for safety and monitoring applications.
Key Features of MQ-8 Hydrogen Gas Sensor Module H2 Alarm Detection
High-quality dual-panel design with onboard power indicator LED
Digital output (DO) with active‐low TTL alarm signal when H₂ exceeds threshold
Analog output (AO) voltage increases linearly with hydrogen concentration
Utilizes tin oxide (SnO₂) sensing element for sensitive H₂ detection
Long service life and stable performance over extended operation
Genuine product, fast shipping from Zbotic across India
Applications and Use Cases
Hydrogen leak detection in fuel cell and battery systems
Safety monitoring in industrial plants handling H₂ gas
Laboratory gas analyzers for research and QA processes
DIY and educational projects involving gas sensing
Integration into automated ventilation or alarm systems
How to Use MQ-8 Hydrogen Gas Sensor Module H2 Alarm Detection
To set up the MQ-8 module, connect VCC and GND to your 5 V supply, then wire the DO pin to a digital input and the AO pin to an analog input on your microcontroller. Power the board, allow the sensor to warm up for stabilization, and monitor AO for concentration readings. Configure your code to trigger on DO’s low‐level signal for alarm conditions.
Why Buy from Zbotic?
Genuine Products: All items sourced from authorized distributors
Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
Free Shipping: Free delivery on qualifying orders
COD Available: Cash on Delivery, UPI, cards, net banking
Technical Support: Expert help for setup and troubleshooting
Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
How does the digital output indicate hydrogen presence?
The DO pin provides a TTL‐level output that goes LOW when hydrogen concentration exceeds the module’s built-in threshold, allowing you to trigger alarms or interrupts.
What does the analog output voltage represent?
The AO pin delivers a voltage proportional to the detected H₂ concentration. As hydrogen levels rise, AO voltage increases, enabling you to read exact concentration trends.
How can I ensure reliable readings over time?
The MQ-8 uses a robust SnO₂ sensing element for long life and stability. Warm up the sensor for a few minutes before measurement, store it in clean air when unused, and avoid exposure to corrosive gases for best durability.
The MQ-8 Hydrogen Gas Sensor Module H2 Alarm Detection is a versatile gas and dust sensor used across a wide range of applications including air quality monitoring, gas leak detection, industrial safety, HVAC systems, and environmental monitoring.
Common use cases:
Building a gas leak alarm for LPG/methane
Monitoring indoor air quality (CO2, VOC)
Dust monitoring in a workshop
This product is ideal for environmental engineers, safety professionals, and IoT developers.
Technical Tip: MQ-series sensors need a warm-up period (24-48 hours for first use). Calibrate in clean air for accurate readings.
Shipping & Delivery
Free shipping on orders above ₹999 across India
Dispatched within 1-3 business days
Expected delivery: 3-7 business days depending on location
Secure packaging to ensure safe transit of electronic components
Weight
0.01 kg
Dimensions
4 × 4 × 3 cm
15 Days Warranty
Please note that this item is only covered by a standard supplier warranty against manufacturing defects for a period of 15days from the time of delivery. It is important to understand that only manufacturing defects are covered under this warranty, and any other issues will not be considered for reimbursement or replacement. We strongly advise inspecting the product upon delivery to ensure it meets your expectations. In case of any manufacturing defects, we guarantee reimbursement or replacement.
What voids warranty:
If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.
Pranav Bajaj (verified owner) –
Perfect for my weather station. This MQ-8 Hydrogen Gas Sensor Module H2 gives consistent readings day and night.
Tarun Rao –
Good quality MQ-8 Hydrogen Gas Sensor Module H2. Some variation in readings but within acceptable range.
Utkarsh Rao (verified owner) –
Perfect for my weather station. This MQ-8 Hydrogen Gas Sensor Module H2 gives consistent readings day and night.
Kabir Joshi (verified owner) –
Good quality MQ-8 Hydrogen Gas Sensor Module H2. Some variation in readings but within acceptable range.
Urmi Nair (verified owner) –
Bought this MQ-8 Hydrogen Gas Sensor Module H2 for my college project. Accurate readings, easy to code. Very happy!
Deepak Khurana (verified owner) –
Superb MQ-8 Hydrogen Gas Sensor Module H2! Using it in my environmental monitoring system. Very reliable data.
Varun Arora –
Nice MQ-8 Hydrogen Gas Sensor Module H2. Readings are mostly accurate. Good enough for my hobby project.
Vidya Bhat –
Very satisfied with this MQ-8 Hydrogen Gas Sensor Module H2. Library support is good and it’s easy to interface.
Shubham Mishra (verified owner) –
Good MQ-8 Hydrogen Gas Sensor Module H2. Works as described. Calibration needed some patience but results are good.
Lakshya Modi (verified owner) –
Excellent sensitivity and range on this MQ-8 Hydrogen Gas Sensor Module H2. Works better than I expected.
Om Luthra –
Nice MQ-8 Hydrogen Gas Sensor Module H2. Readings are mostly accurate. Good enough for my hobby project.
Mohit Rathore (verified owner) –
Superb MQ-8 Hydrogen Gas Sensor Module H2! Using it in my environmental monitoring system. Very reliable data.
Mayank Dave (verified owner) –
Very satisfied with this MQ-8 Hydrogen Gas Sensor Module H2. Library support is good and it’s easy to interface.
Uday Tiwari (verified owner) –
Pretty good MQ-8 Hydrogen Gas Sensor Module H2. Documentation could be better but the sensor itself is solid.
Lakshya Pandey (verified owner) –
Good quality MQ-8 Hydrogen Gas Sensor Module H2. Some variation in readings but within acceptable range.
Hitesh Iyer (verified owner) –
Perfect MQ-8 Hydrogen Gas Sensor Module H2 for my automation project. Integrates seamlessly with my microcontroller.
Siddharth Arora –
Excellent MQ-8 Hydrogen Gas Sensor Module H2! Readings are accurate and consistent. Perfect for my project.
Ishan Parekh –
Pretty good MQ-8 Hydrogen Gas Sensor Module H2. Documentation could be better but the sensor itself is solid.
Deepika Pillai (verified owner) –
Perfect MQ-8 Hydrogen Gas Sensor Module H2 for my automation project. Integrates seamlessly with my microcontroller.
Sumit Deshpande (verified owner) –
Pretty good MQ-8 Hydrogen Gas Sensor Module H2. Documentation could be better but the sensor itself is solid.
Vivek Yadav (verified owner) –
This MQ-8 Hydrogen Gas Sensor Module H2 is excellent for the price. My data logging project is working perfectly now.
Tanvi Bhatt (verified owner) –
Outstanding accuracy from this MQ-8 Hydrogen Gas Sensor Module H2. Compared with a professional instrument, readings match closely.
Nakul Bhat (verified owner) –
Nice MQ-8 Hydrogen Gas Sensor Module H2. Readings are mostly accurate. Good enough for my hobby project.
Shruti Shetty (verified owner) –
Good quality MQ-8 Hydrogen Gas Sensor Module H2. Some variation in readings but within acceptable range.
Sumit Parekh (verified owner) –
Bought this MQ-8 Hydrogen Gas Sensor Module H2 for my college project. Accurate readings, easy to code. Very happy!
Saurabh Bhandari –
Outstanding accuracy from this MQ-8 Hydrogen Gas Sensor Module H2. Compared with a professional instrument, readings match closely.
Divyansh Singh (verified owner) –
Love this MQ-8 Hydrogen Gas Sensor Module H2. Response time is fast and readings are stable.
Bhavna Solanki –
Excellent MQ-8 Hydrogen Gas Sensor Module H2! Readings are accurate and consistent. Perfect for my project.
Kartik Shetty (verified owner) –
Outstanding accuracy from this MQ-8 Hydrogen Gas Sensor Module H2. Compared with a professional instrument, readings match closely.
Sarthak Garg –
Excellent MQ-8 Hydrogen Gas Sensor Module H2! Readings are accurate and consistent. Perfect for my project.
Raj Pandey (verified owner) –
Average MQ-8 Hydrogen Gas Sensor Module H2. Readings fluctuate a bit. Works for rough measurements.
Himanshu Modi (verified owner) –
Very satisfied with this MQ-8 Hydrogen Gas Sensor Module H2. Library support is good and it’s easy to interface.
Pranav Reddy (verified owner) –
Outstanding accuracy from this MQ-8 Hydrogen Gas Sensor Module H2. Compared with a professional instrument, readings match closely.
Gaurav Saini –
Love this MQ-8 Hydrogen Gas Sensor Module H2. Response time is fast and readings are stable.