Description:
MQ-2 Flammable Gas and Smoke Sensor
The MQ2 Flammable Gas and Smoke Sensor can detect gas leaks (in homes and industries) of various kinds, such as LPG, i-butane, methane, alcohol, hydrogen, and smoke. It has a fast response time that allows for quick measurements. The sensitivity of the sensor can be adjusted by the potentiometer.
The MQ2 gas sensor can measure gas concentrations from 200 to 10000ppm. It is very sensitive to propane, hydrogen, methane, and LPG.
The MQ series of gas sensors have a small heater and an electro-chemical sensor inside. They can detect a range of gases at room temperature indoors.
The MQ2 gas sensor uses SnO2 as the sensitive material, which has lower conductivity in clean air. When the target gas is present, the conductivity of the sensor increases with the gas concentration. The MQ2 sensor can be used to detect different combustible gases, especially methane. It is low-cost and suitable for various applications. This sensor can be used to make a wireless gas leak detector for home security systems.
Features:
- High sensitivity to Propane, smoke, Hydrogen, LPG, CO, alcohol, Smoke.
- Fast response time <10s
- High sensitivity
- Stable and long life
Connections:
Connecting five volts across the heating (H) pins keeps the sensor hot enough to function correctly. Connecting five volts at either the A or B pins causes the sensor to emit an analog voltage on the other pins. A resistive load between the output pins and ground sets the sensitivity of the detector.
Applications:
- Gas leak detection system
- Fire/safety detection system
- Gas leak alarm
- Gas detector
- Industrial combustible gas detector
Specification:
| Model Type | MQ-2 |
|---|---|
| Sensor Type | Semiconductor |
| Standard Encapsulation | Bakelite, Metal cap |
| Target Gas | Flammable gas, smoke gas sensor |
| Detecting Range | 300～10000ppm(flammable gas) |
| Loop Voltage (Vc) | ≤24V DC |
| Heater Voltage (VH) | 5.0V±0.1V AC or DC |
| Tem. Humidity: | 20+/-2C, 55%+/-5%RH |
| Output Voltage | 2.5V~4.0V(in 2000ppmC3H8) |
| Load Resistance | Adjustable |
| Heater Resistance | 29Ω±3Ω（room tem.） |
| Sensitivity | Ro(in air)/Rs(2000ppm C3H8)>5 |
| Length (mm): | 24 |
| Diameter (mm): | 19 |
Package Includes:
- 1 x MQ-2 Flammable Gas and Smoke Sensor
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Read More →Technical Specifications
| Model | MQ-2 |
|---|---|
| Interface / Protocol | BLE |
| SKU | AI0741 |
| Weight | 0.00455 kg |
| Availability | Out of Stock |
Applications & Use Cases
The MQ-2 Flammable Gas and Smoke Sensor 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
Isha Verma (verified owner) –
This MQ-2 Flammable Gas and Smoke Sensor is a must-have for sensor projects. Plug and play with Arduino.
Zubin Mehta (verified owner) –
Excellent sensitivity and range on this MQ-2 Flammable Gas and Smoke Sensor. Works better than I expected.
Piyush Deshpande (verified owner) –
Great MQ-2 Flammable Gas and Smoke Sensor. Using it in my smart agriculture system. Reliable measurements every time.
Dhruv Kulkarni (verified owner) –
Great quality MQ-2 Flammable Gas and Smoke Sensor. Calibrated it easily and the accuracy is impressive.
Ravi Dhawan (verified owner) –
Good quality MQ-2 Flammable Gas and Smoke Sensor. Some variation in readings but within acceptable range.
Nikhil Kamath (verified owner) –
Superb MQ-2 Flammable Gas and Smoke Sensor! Using it in my environmental monitoring system. Very reliable data.
Sneha Khurana (verified owner) –
Perfect MQ-2 Flammable Gas and Smoke Sensor for my automation project. Integrates seamlessly with my microcontroller.
Isha Batra (verified owner) –
This MQ-2 Flammable Gas and Smoke Sensor works great with Arduino. Easy to wire up and code.
Kavya Mehta (verified owner) –
Good MQ-2 Flammable Gas and Smoke Sensor. Works as described. Calibration needed some patience but results are good.
Kapil Gupta (verified owner) –
This MQ-2 Flammable Gas and Smoke Sensor is a must-have for sensor projects. Plug and play with Arduino.