MQ-5 Smoke Gas Detector Sensor

MQ-5 Smoke & Gas Detector Sensor Module

LPG, Natural Gas & Smoke Detection Sensor

The MQ-5 Gas Sensor Module is a highly sensitive semiconductor-based gas and smoke detection sensor designed to detect LPG, natural gas, coal gas, and smoke. It is widely used in Arduino, Raspberry Pi, ESP8266/ESP32, and IoT safety projects for real-time gas leakage monitoring and hazard detection.

This sensor offers fast response, stable output, and reliable long-term performance, making it suitable for both indoor and industrial applications.

Key Features

• High Sensitivity to LPG & Natural Gas

• Detects Smoke and Combustible Gases

• Fast Response and Recovery Time

• Stable and Durable Metal-Oxide Sensor

• Analog Output for Gas Concentration Measurement

• Compact and Easy-to-Integrate Module

• Low Cost with Reliable Performance

Detectable Gases

• Liquefied Petroleum Gas (LPG)

• Natural Gas

• Coal Gas

• Smoke

• Combustible Gases

Technical Specifications

• Sensor Type: Semiconductor Gas Sensor

• Model: MQ-5

• Operating Voltage: 5V DC

• Heater Voltage: 5V

• Current Consumption: ≤ 150 mA

• Output Type: Analog

• Detection Range: 300 – 10,000 ppm (approx.)

• Warm-Up Time: ≥ 24 hours for initial calibration

• Response Time: < 10 seconds

Pin Configuration

• VCC: 5V Power Supply

• GND: Ground

• AO: Analog Output

Module Components

• Metal Mesh Gas Sensor Head:

  • High-temperature resistant

  • Protects sensing element

  • Improves sensitivity and stability

• PCB Board:

  • Blue FR-4 board

  • 4-pin interface header

  • Gold-plated mounting holes

Applications

• Gas leakage detection systems

• Smoke alarm systems

• Home and industrial safety devices

• Smart home automation

• IoT-based gas monitoring systems

• Educational electronics projects

• Environmental monitoring

Advantages

• Long operational life

• Reliable performance in harsh environments

• Easy calibration and integration

• Widely supported in open-source projects