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MQ-4 Methane and Natural Gas Sensor Module – KSH 600 at CLOUD SENSORS Mombasa – Top quality sensors. Best electronics in Kenya. Shop now for Arduino, ESP32, sensors and IoT devices.
MQ-4 Methane and Natural Gas Sensor Module – KSH 600 at CLOUD SENSORS Mombasa – Top quality sensors. Best electronics in Kenya. Shop now for Arduino, ESP32, sensors and IoT devices. - View 2
MQ-4 Methane and Natural Gas Sensor Module – KSH 600 at CLOUD SENSORS Mombasa – Top quality sensors. Best electronics in Kenya. Shop now for Arduino, ESP32, sensors and IoT devices. - View 3
MQ-4 Methane and Natural Gas Sensor Module – KSH 600 at CLOUD SENSORS Mombasa – Top quality sensors. Best electronics in Kenya. Shop now for Arduino, ESP32, sensors and IoT devices. - View 4
Home / Sensors / MQ-4 Methane and Natural Gas Sensor Module

MQ-4 Methane and Natural Gas Sensor Module

5 out of 5 · 2 reviews
SKU: HMJ048 Category: Sensors
KSH 600.00
In Stock
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Product Description

MQ-4 Methane and Natural Gas Sensor Module

High-Sensitivity Semiconductor Gas Detector for Arduino

The MQ4 gas sensor module is a costeffective, low-power device optimized for detecting methane (CH4) and natural gas (CNG). It uses a tin dioxide (SnO2) semiconductor, making it ideal for gas leak detection in home and industrial safety systems, with minimal sensitivity to alcohol, smoke, and cooking fumes [citation:1][citation:5][citation:10].

Reliable Methane Detection - High sensitivity to CH4 from 300 to 10,000 ppm.
Dual Output Modes - Provides both analog (AO) and digital (DO) signals.
Operating voltage is 5V DC. The sensor requires a preheat time for optimal stabilization [citation:1].
Use the onboard potentiometer to set the digital threshold sensitivity [citation:1].
To estimate accurate ppm using the analog output, the sensor requires a calibration period in clean air [citation:9].

Technical Specifications

ParameterValue
Target GasMethane (CH4), Natural Gas [citation:1]
Detection Range300 to 10,000 ppm [citation:1][citation:2]
Operating Voltage5V DC [citation:1]
Heater Consumption~150 mA [citation:1]
Output SignalAnalog (AO) & Digital (DO) [citation:1]

= Key Features =

High Sensitivity to CH4 - Excellent response to methane and natural gas.

Fast Response Time - Response time of <10 seconds [citation:1].

Adjustable Sensitivity Builtin potentiometer for setting the digital trigger threshold [citation:1].

Stable and Long Life - Reliable construction with stable characteristics.

Resistant to Interference - Low sensitivity to alcohol and cigarette smoke [citation:5][citation:10].

= Applications =

  1. Household and industrial gas leak detectors [citation:1][citation:10].
  2. Methane concentration monitoring [citation:1].
  3. Portable gas analyzers and safety devices.
  4. IoT and DIY environmental sensing.
Versatile Safety Component - Widely used for methane detection with Arduino.
Easy Arduino Integration - Simple wiring with analog and digital outputs.

√ On-board power and signal indicators.

√ 4 mounting holes for secure installation.

√ Compatible with Arduino, ESP32, and Raspberry Pi.

Troubleshooting

No output:

  • Verify stable 5V power supply and connections [citation:3].
  • Ensure sufficient preheat time.
  • Check the wiring (VCC, GND, AO, DO) [citation:9].

Inconsistent readings:

  • Adjust the sensitivity potentiometer [citation:1].
  • Avoid exposing the sensor to contaminants.
  • Calibrate R0 for the environment [citation:7][citation:12].