🔍 Product Overview

The MQ-4 Methane Sensor Module is a high-sensitivity gas detector designed to identify methane (CH₄) and natural gas leaks. It uses a tin dioxide (SnO₂) based sensing element that changes resistance as methane levels rise, providing reliable output for safety, monitoring, and automation systems.

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🚀 Why It’s Ideal for Your Projects

• Focused on methane and natural gas — Particularly suited for detecting CH₄, this sensor is tailored for environments where natural gas leaks must be monitored.

• Dual-mode output flexibility — Offers analog output for measuring concentration levels and a digital output that triggers when gas levels exceed a set threshold.

• Microcontroller-friendly design — Operates at 5V, and easily connects to boards such as Arduino or ESP32 through standard analog and digital interface pins.

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📝 Key Features

• Detection concentration range: approximately 300 ppm to 10,000 ppm of methane/natural gas.

• Supply voltage: 5V DC (heater and sensor circuit).

• Dual outputs: Analog (voltage varies with concentration) and Digital (threshold-triggered signal).

• Warm-up time required (often 24+ hours) for accurate readings and stable operation.

• Low sensitivity to non-target gases (alcohol, smoke) to reduce false alarms.

• Operating temperature range: around -10°C to +50°C (depending on module version).

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🎯 Typical Applications

• Natural gas leak alarms – Detect methane leaks in homes, kitchens, boiler rooms, or industrial gas installations.

• Safety automation systems – Trigger ventilation, shut-off valves, or alert systems when gas concentrations climb above safe levels.

• IoT & smart monitoring – Integrate into connected systems for remote gas detection, data logging, and automated alerts.

• Educational and DIY projects – Ideal for learning gas sensor integration, analog and digital interfacing with microcontrollers.

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✅ Why You’ll Love It

If your project calls for reliable detection of methane or natural gas leaks, the MQ-4 sensor module is an excellent choice. With its strong sensitivity, dual output options, and compatibility with popular development boards, it empowers you to build robust safety or monitoring systems quickly and affordably.