MQ-4 Methane Natural Gas Sensor

Name: MQ-4 Methane Natural Gas Sensor
SKU: TS-P1424
Availability: InStock

The SnO₂ sensing layer in the MQ-4 has high resistance in clean air. When methane or other combustible gases are present, they react with oxygen ions on the sensor’s surface, reducing resistance and increasing the output voltage.

$3.95

10 in stock

This item: MQ-4 Methane Natural Gas Sensor

10 in stock

$3.95

MCP23008-E/P I/O Expander 18-Pin

1 × MCP23008-E/P I/O Expander 18-Pin

17 in stock

$4.65

Title	Qty	Discount
Qty Discount	4 - 9	5% $3.75
Qty Discount	10 +	8% $3.63

SKU: TS-P1424

Categories:Components & Parts, Gas Sensor

Description

Additional information

Applications

Support & Utility

Q & A

The MQ-4 Gas Sensor is a semiconductor-based gas sensor used primarily to detect methane (CH₄) and natural gas. It offers fast response, high sensitivity, and stable performance, making it ideal for gas leak detection, home safety alarms, and industrial monitoring.

The sensor utilises a SnO₂ (tin dioxide) sensing element, whose resistance changes when exposed to combustible gases, thereby providing an analog signal proportional to the gas concentration.

Specifications:

Gas sensor – MQ-4
High-sensitivity Gases: methane (CH₄) and natural gas
Low Sensitivity: LPG and propane
Detection range: 200 – 10,000 ppm
Heater voltage (V<sub>H</sub>): 5V ±0.2V
Heater Resistance: 31 Ω ±3 Ω
Load Resistance: Adjustable (typically 20 kΩ)
Heater Consumption: ≤900 mW
Preheat time: 24 hours for best stability
Output type: Analog voltage (0–5V)
Dimensions: 18mm Diameter, 17mm High excluding pins, Pins – 6mm

Package Includes:

MQ-4 Methane Natural Gas Sensor

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