MQ-2 Smoke Gas LPG Butane hydrogen Sensor Module

2 sold in last 8 hours
Ednex Shop
Estimated Delivery in 7 To 15 days
Dhs.7.30 AED
  • High-quality dual-panel design with power indicator and TTL signal output

  • Four screw holes for easy positioning

  • Analog output voltage proportional to gas concentration

  • Low-level TTL output signal for easy microcontroller or relay module connection

  • DO (TTL) output for switching signal

  • LM393 and ZYMQ-2 gas sensors chip

  • Working voltage: DC 5V

  • AO output: 0.1-0.3V (relative to pollution), maximum concentration voltage about 4V

  • DO output: TTL digital 0 and 1 (0.1 and 5V)

  • Input voltage: DC 5V

  • Power consumption: 150mA

  • Size: 32mm x 22mm x 27mm

  • Sensor requires 20s of preheating for stable measurements
Size Guide


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Our policy lasts 7 days. If 7 days have gone by since your order has been delivered, unfortunately we can’t offer you a refund or exchange.

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To return your product, you should mail your product to:

EdNex Educational Aids Trading LLC.

205, Al Reyami Building, Karama, Near Karama PO,

PO Box 124467, Dubai,

United Arab Emirates.


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Exchanges (if applicable)

We only replace items if they are defective or damaged.  If you need to exchange it for the same item, send us an email at and after confirmation from our customer support team, please send your item to:

EdNex Educational Aids Trading LLC.

205, Al Reyami Building, Karama, Near Karama PO,

PO Box 124467, Dubai,

United Arab Emirates.

The MQ-2 Smoke Gas LPG Butane Hydrogen Sensor Module is a high-quality device designed to detect the presence of smoke, LPG (liquefied petroleum gas), butane, and hydrogen gas. It features a dual-panel design with a power indicator and TTL signal output for convenient monitoring and integration into systems. The module has four screw holes for easy positioning and installation. It provides an analog output voltage that is proportional to the concentration of the detected gas, allowing for precise measurements. Additionally, it offers a low-level TTL output signal, making it compatible with microcontrollers or relay modules for further processing or control. The module utilizes the LM393 and ZYMQ-2 gas sensor chips to ensure accurate and reliable gas detection. It operates on a DC 5V working voltage and consumes approximately 150mA of power. The analog output (AO) voltage ranges from 0.1V to 0.3V relative to pollution, with the maximum concentration voltage reaching around 4V. The digital output (DO) provides TTL signals of 0 and 1, corresponding to 0.1V and 5V, respectively. With compact dimensions of 32mm x 22mm x 27mm, the MQ-2 sensor module is suitable for various applications where gas detection is required. It is important to note that the sensor requires a preheating time of 20 seconds before stable measurements can be obtained. Overall, the MQ-2 Smoke Gas LPG Butane Hydrogen Sensor Module offers a reliable and convenient solution for detecting smoke, LPG, butane, and hydrogen gases. It provides both analog and digital outputs, making it compatible with different systems and devices. Please follow the manufacturer's instructions and safety guidelines for proper installation and use of the sensor module.
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MQ-2 Smoke Gas LPG Butane hydrogen Sensor Module
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