SKU: SENS-0940
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Seeed Studio Studio Grove MQ2 Gas Sensor Module - Analog Output

₹919.00 (Inclusive of all taxes)
Out of Stock

The Seeed Studio Studio Grove MQ2 is an analog gas sensor module designed for detecting combustible gases and smoke. It operates on a 5V supply and provides an analog voltage output, making it directly compatible with Arduino, Raspberry Pi, and other microcontroller platforms for air quality monitoring and safety applications.

Features

  • MQ2 semiconductor gas sensor detects LPG, i-butane, methane, alcohol, hydrogen, and smoke.
  • Analog voltage output for direct reading by microcontroller ADC pins.
  • On-board potentiometer for adjusting sensor sensitivity and threshold.
  • Grove standardized connector for plug-and-play compatibility with Seeed Studio Studio ecosystem.
  • Operates from a 5V DC power supply with simple 4-pin interface (VCC, GND, SIG, NC).

Out of stock

Description

The Grove MQ2 Gas Sensor module integrates a robust MQ-2 semiconductor gas sensing element, which changes its conductivity in the presence of specific combustible gases and smoke. The module includes signal conditioning circuitry that provides a stable analog output voltage proportional to gas concentration, simplifying integration into monitoring systems.

Designed for rapid prototyping, the module features the Grove 4-pin connector system, eliminating the need for soldering or complex wiring. The on-board potentiometer allows for fine-tuning of the sensor’s sensitivity to tailor its response for different environmental conditions and alarm thresholds, making it suitable for both home safety projects and industrial leak detection setups.

Key Features

  • Wide-spectrum detection for common combustible gases and smoke.
  • Integrated analog output signal conditioning for direct microcontroller interfacing.
  • On-board sensitivity adjustment via a multi-turn potentiometer.
  • Grove connector system ensures reliable, plug-and-play connectivity.
  • Compact PCB design with a pre-heated sensor for stable operation.
  • High-value build optimized for educational and prototyping applications.

Applications

  • Home safety systems for LPG and natural gas leak detection.
  • Prototype air quality monitors for combustible gas concentration.
  • Industrial workshop safety alarms for smoke and flammable vapors.
  • Educational projects demonstrating gas sensing principles and IoT environmental monitoring.

Technical Specifications

Sensor TypeMQ-2 Semiconductor
Detection GasesLPG, i-Butane, Methane, Alcohol, Hydrogen, Smoke
Operating Voltage5V DC
Output SignalAnalog Voltage
InterfaceGrove (Analog)
Dimensions (L x W)40 mm x 24 mm
Weight16 g

Frequently Asked Questions

What gases can the Grove MQ2 sensor detect?

The MQ2 sensor is sensitive to a range of combustible gases including Liquefied Petroleum Gas (LPG), i-butane (propane), methane (natural gas), alcohol, hydrogen, and smoke. It is a broad-spectrum sensor ideal for general leak detection and safety alarms.

How do I connect and read data from this sensor with an Arduino?

Connect the module's Grove cable to an Arduino Grove shield or use the pinout (VCC to 5V, GND to GND, SIG to an analog input pin like A0). The sensor outputs an analog voltage (0-5V) which can be read using the analogRead() function. The value increases with higher gas concentration.

Can I adjust the sensitivity of the MQ2 sensor?

Yes, the module includes a blue multi-turn potentiometer. Turning this potentiometer adjusts the sensitivity of the sensor's onboard comparator circuit, allowing you to set a threshold for detection or alarm triggering based on your specific environment and target gas.

Does the sensor require a pre-heating or warm-up period?

Yes, like most metal-oxide semiconductor (MOS) sensors, the MQ2 requires an initial warm-up period of 1-2 minutes after power is applied to stabilize its internal heater and provide accurate readings. For best results, allow the sensor to stabilize before taking measurements.

Package Includes

  • 1 x Grove MQ2 Gas Sensor Module
  • 1 x Grove 4-pin Cable

Additional Information

Weight 0.016 kg
Dimensions 4 × 2.4 cm