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MQ-2 Smoke and Gas Sensor for Arduino - Compatible Detector Module
Brand: satkit
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The MQ-2 smoke and gas sensor for Arduino is a module designed to detect combustible gases and smoke with high accuracy, ideal for Arduino-based safety and environmental monitoring projects. This module is compatible with Arduino boards, making it easy to integrate into detection and control systems.
Main features:
- Operating voltage: 5V, suitable for most Arduino systems.
- Pin Definition: 1_output, 2_GND, 3_VCC for simple connections.
- Fast response: Detects changes in gas concentration in real time.
- Long service life and reliable stability: Ensures consistent performance in long-term projects.
- Main chip: MQ-2 sensor specialised in smoke and flammable gases.
- Dual output: Analogue output and TTL level output for greater flexibility in data reading.
- High sensitivity: Detects smoke and combustible gases in a range of 300 to 10000 ppm.
- Module-mounted: Includes connection pins to make it easier to use in prototypes and projects.
- Adjustable sensitivity: Integrated potentiometer to calibrate sensitivity according to project needs.
- Compact size: 32mm x 22mm x 24mm, ideal for integration in tight spaces.
Typical uses:
- Smoke detection in fire alarm systems.
- Monitoring combustible gases in industrial or domestic environments.
- Educational and hobby Arduino projects for learning about sensors and safety.
- Integration into automation systems to trigger alerts or ventilation when dangerous gases are detected.
Compatibility: This module is designed to work with Arduino boards and other microcontrollers that support 5V analogue and digital inputs. The analogue output allows gas concentration to be measured, while the TTL output makes digital detection easier for triggering alarms or control systems.
With its high sensitivity and ease of use, the MQ-2 sensor is a reliable option for those looking to implement smoke and combustible gas detection systems in their electronic projects.
- Operating voltage: 5V compatible with Arduino.
- Analogue output and TTL output for flexible data reading.
- High sensitivity to smoke and combustible gases (300-10000ppm).
- Fast response and reliable stability for accurate detection.
- Adjustable sensitivity with integrated potentiometer.
- Compact dimensions: 32mm x 22mm x 24mm.
- Module-mounted with connection pins for easy integration.
Customer Questions & Answers
What are the electrical specifications and dimensions of the module, and what exactly is included in the package?
The module operates at 5 VDC, has three pins (output, GND and VCC), and measures 32 mm x 22 mm x 24 mm. Approximate weight is 8 g. The package includes only the assembled sensor module, with no cables, manual or additional accessories.
What is the operating life of the MQ-2 sensor, and what factors can affect its durability?
The MQ-2 sensor has an estimated service life of 2 to 3 years of continuous use under normal environmental conditions (20-25 °C and 30-70% RH). Prolonged exposure to corrosive contaminants, dust or temperatures outside the typical range can degrade sensitivity more quickly.
Does this sensor comply with any safety standards for industrial applications or certified alarm systems?
The MQ-2 sensor is a general-purpose product for development and prototyping; it does not have industrial-use certifications or compliance with specific standards (such as UL, EN54 or ATEX). It is not recommended as the sole device in critical or certified security systems.
Is the MQ-2 sensor compatible with Arduino boards?
Yes, the MQ-2 sensor is designed to be compatible with Arduino boards and other microcontrollers that support 5V analogue and digital inputs.
What types of gases can the MQ-2 sensor detect?
The MQ-2 sensor detects smoke and combustible gases, including common flammable gases such as butane and methane.
How is the sensitivity of the MQ-2 sensor adjusted?
The sensitivity is adjusted using an integrated potentiometer on the module, allowing the response to be calibrated according to project needs.
What is the detection range of the MQ-2 sensor?
The MQ-2 sensor can detect gas concentrations in a range of 300 to 10000 ppm.
What type of output does the MQ-2 sensor offer?
It offers dual output: an analogue output for measuring gas concentration and a TTL level output for digital detection.
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