This sensor kit features nine versatile MQ-series gas sensors that can detect different types of gases, making it ideal for various gas monitoring, home safety, and industrial applications. Each sensor operates independently and provides analog output signals for easy integration with microcontrollers and other digital systems. This kit is designed for compatibility with Arduino, Raspberry Pi, and other development platforms.

Contents and Gas Detection Capabilities

1. MQ2 Sensor - Detects flammable gases and smoke. Suitable for LPG, i-butane, propane, methane, alcohol, hydrogen, and smoke detection.
2. MQ3 Sensor - Specialized for alcohol detection. Ideal for breathalyzers and other applications requiring ethanol vapor detection.
3. MQ4 Sensor - Primarily detects methane (CH4) and natural gas, with limited sensitivity to other gases.
4. MQ5 Sensor - Designed for LPG, natural gas, and town gas detection. It provides a sensitive response to propane and butane.
5. MQ6 Sensor - High sensitivity to LPG, butane, and propane gases, suitable for leak detection in homes or industries.
6. MQ7 Sensor - Specifically detects carbon monoxide (CO). Widely used for CO alarms and monitoring in home and industrial environments.
7. MQ8 Sensor - Specializes in hydrogen (H2) gas detection, useful for hydrogen detection in laboratories or fuel cells.
8. MQ9 Sensor - Detects both carbon monoxide (CO) and combustible gases (methane, LPG), making it versatile for various safety applications.
9. MQ135 Sensor - Detects a range of air quality-related gases, including ammonia (NH3), nitrogen oxides (NOx), alcohol, benzene, smoke, and CO2. Ideal for air quality monitoring.

Features

• Wide Gas Detection Range: Covers a variety of gases, including flammable gases, carbon monoxide, alcohol vapors, and air pollutants.
• Analog Output: Each sensor provides an analog voltage output that can be easily read by an analog input pin on microcontrollers, like Arduino.
• Simple Interface: Each sensor has just three pins (VCC, GND, and analog output), making it easy to connect and use.
• Adjustable Sensitivity: Potentiometer on each sensor module allows users to adjust the sensitivity based on the target gas concentration.
• Low Cost and Easy to Replace: MQ sensors are affordable and replaceable, making the kit a cost-effective solution for gas detection projects.

Applications

• Home safety systems (CO alarms, smoke detectors, LPG leak detectors)
• Industrial safety and hazardous gas monitoring
• Breathalyzer devices
• Air quality and pollution monitoring
• Laboratory gas detection setups
• Environmental monitoring systems

Specifications

• Operating Voltage: 5V
• Operating Temperature: -20°C to 50°C
• Output Signal: Analog
• Detection Range: Varies by sensor, typically from 100 ppm to 10000 ppm depending on the gas type.
• Warm-up Time: Each sensor requires a few minutes to stabilize for accurate readings.

Compatibility

These sensors are compatible with various development platforms, including:

• Arduino and compatible boards
• Raspberry Pi
• ESP8266/ESP32
• Other microcontrollers with analog input capabilities

Package Includes

• 1 x MQ2 Gas Sensor Module
• 1 x MQ3 Gas Sensor Module
• 1 x MQ4 Gas Sensor Module
• 1 x MQ5 Gas Sensor Module
• 1 x MQ6 Gas Sensor Module
• 1 x MQ7 Gas Sensor Module
• 1 x MQ8 Gas Sensor Module
• 1 x MQ9 Gas Sensor Module