Winsen MQ-4- Methane Sensor


In stock

SKU: 938343
  1. Operating Voltage is +5V
  2. Used to measure or detect Methane, Alcohol, and other gases
  3. Can be used as a digital or analog sensor
  4. Long life and low cost
  5. Simple drive circuit


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1 Year Warranty
15 Days Warranty
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Brand: Winsen
Category: Gas and Dust Sensor
Tags: Gas Sensor, Methane Gas Sensor, Winsen MQ-4 Methane Sensor

Winsen MQ-4 Methane Sensor is an original and brand new methane gas sensor. With a long lifespan and low price, for detecting Methane gas leakage.

The sensitive material of the MQ-4 gas sensor is SnO2, which with lower conductivity in clean air. When the target flammable gas exists, the sensor’s conductivity gets higher along with the gas concentration rising. Users can convert the change of conductivity to correspond output signal of gas concentration through a simple circuit.

MQ-4 gas sensor has a high sensitivity to methane, also has anti-interference to alcohol and other gases. It is low cost and suitable for different applications of detecting kinds of methane concentration gases.


  1. Responsive to Methane gases
  2. Compatible with 5V
  3. Cost-efficient

Package Includes:

1 x Winsen MQ-4 Methane Sensor

Model Type


Sensor Type


Standard Encapsulation

Bakelite, Metal Cap

Target Gas


Detecting Range


Output Voltage

2.5V~4.0V (in 5000ppm CH4)

Load Resistance


Heater Voltage

5.0V AC or DC


Rs(in air)/Rs(in 5000ppmCH4)>5

Tem. Humidity:

20C, 55%+/-5%RH

Length (mm):


Diameter (mm):


Weight (g):


Shipping Weight 0.02 kg
Shipping Dimensions 2 × 2 × 2 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

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.

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Country Of Origin: China