MQ-131 Ozone (O3) Gas Sensor Module

MQ-131 Ozone (O3) Gas Sensor Module

Detect Ozone (O3) and other oxidizing gases with the specialized MQ-131 Gas Sensor Module. This sensor is designed for high sensitivity to Ozone, a key component of smog and an indicator of air pollution. It’s an essential tool for advanced air quality monitoring systems and environmental research projects.

The MQ-131 is also sensitive to other gases like Chlorine (Cl2) and Nitrogen Dioxide (NO2), making it a versatile sensor for detecting various pollutants. This breakout board simplifies its use by including a comparator circuit and a sensitivity adjustment potentiometer. It features a dual-output system: an **Analog Output (A0)** provides a voltage proportional to the gas concentration, while a **Digital Output (D0)** triggers when the concentration exceeds a user-defined threshold.

This trigger point can be precisely calibrated using the onboard potentiometer. For projects requiring the specific detection of Ozone or general oxidizing pollutants, the MQ-131 is a reliable and powerful choice.

Key Features:

• Sensor Model: MQ-131
• Primary Detection: High sensitivity to Ozone (O3); also detects Chlorine (Cl2), NO2
• Dual Output: Provides both Analog (voltage) and Digital (HIGH/LOW) signals
• Adjustable Sensitivity: Onboard potentiometer to configure the digital alarm threshold
• Operating Voltage: 5V DC
• Interface: 4-pin header (VCC, GND, D0, A0) for simple connection
• Long Life and Stability: Designed for reliable, long-term operation

Applications:

The MQ-131 sensor is ideal for creating a range of environmental projects, including urban air quality monitors, industrial pollution detectors, monitoring systems for sterilization equipment that uses Ozone, and for scientific research with Arduino and other microcontrollers.