MQ131 Ozone Gas Detection Module Air Quality Sensor Board (5V Analog & Digital Ozone Gas Sensor)

The MQ131 Ozone Gas Detection Module is a gas sensing board designed to detect ozone (O₃) concentration in air quality monitoring, environmental sensing, industrial safety, and embedded electronics applications. Based on the MQ131 semiconductor gas sensor, the module provides both analog and digital outputs for easy interfacing with Arduino, ESP32, ESP8266, STM32, Raspberry Pi (with ADC), and other microcontroller platforms. It features an onboard signal conditioning circuit, adjustable sensitivity potentiometer, and status LEDs, making it suitable for real-time ozone monitoring and alarm systems.

Key Features -

• Based on MQ131 ozone gas sensor

• Detects ozone (O₃) gas concentration

• Analog and digital outputs

• Adjustable sensitivity via onboard potentiometer

• Fast response and recovery time

• Onboard signal conditioning circuit

• LED power and detection indicators

• Compact PCB module

• Easy microcontroller interfacing

• Ideal for air quality monitoring

Specifications -

• Product type - Gas Sensor Module

• Sensor model - MQ131

• Detection gas - Ozone (O₃)

• Sensor technology - Semiconductor Gas Sensor

• Operating voltage - 5V DC

• Output type - Analog and Digital

• Interface type - Pin Header Connection

• Sensitivity adjustment - Onboard Potentiometer

• Indicator support - Power and Signal LEDs

• Preheat time - Approximately 20 Seconds

• Mounting type - PCB Module

Applications -

• Air quality monitoring

• Environmental monitoring

• Industrial gas detection

• Ozone monitoring systems

• Laboratory equipment

• Smart home automation

• Embedded electronics

• Safety monitoring systems