MQ-3 Gas Sensor Module for Alcohol Detection

Generic

MQ-3 Gas Sensor Module for Alcohol Detection

Designed for Alcohol Detection with a sensing range of 0.05 mg/L to 10 mg/L
Features a Tin Dioxide (SnO₂) sensing element for reliable alcohol gas detection
Provides both Analog and Digital Outputs for flexible interfacing
Adjustable sensitivity using the onboard potentiometer
Fast response time with excellent resistance to interference from smoke, gasoline, and vapors
Ideal for Breathalyzers, Alcohol Detectors, Gas Leakage Alarms, and safety monitoring systems

Non-returnable

SKU - YTX26270037

₹124.23

₹173.92

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Product Details

MQ-3 Gas Sensor Module for Alcohol Detection

The MQ-3 Gas Sensor Module is a highly sensitive alcohol detection sensor designed to measure alcohol concentrations ranging from 0.05 mg/L to 10 mg/L. It utilizes a Tin Dioxide (SnO₂) sensing element whose conductivity changes in the presence of alcohol vapors, allowing accurate detection and monitoring of alcohol levels.

This low-cost and easy-to-use sensor module provides both analog and digital outputs, making it suitable for microcontroller platforms such as Arduino, ESP32, Raspberry Pi, STM32, and other embedded systems. The onboard potentiometer allows users to adjust the threshold level for digital output triggering, enabling quick implementation of alcohol detection and alarm systems.

🔧 Features

Detects Alcohol Concentrations from 0.05 mg/L to 10 mg/L
High Sensitivity to Alcohol Vapors
Analog and Digital Output Interfaces
Adjustable Digital Output Threshold
Fast Response and Recovery Time
Onboard Power and Output Status LEDs
Stable Performance and Long Service Life
Low-Cost Solution for Alcohol Detection Applications

📋 Specifications

Sensor Type: MQ-3 Alcohol Gas Sensor
Operating Voltage: 5V ±0.1V
Current Consumption: 150mA
Operating Temperature: -10°C to +70°C
Detection Range: 0.05 mg/L to 10 mg/L Alcohol
Output Type: Analog Output (0V–5V) and Digital Output
Sensitivity Adjustment: Onboard Potentiometer
Status Indicators: Power LED and Output LED

📌 Pin Configuration

The MQ-3 Sensor Module features four interface pins. The VCC and GND pins are used to power the module with a 5V supply. The Analog Output (A0) provides a voltage proportional to the detected alcohol concentration, while the Digital Output (D0) becomes active when the detected alcohol level exceeds the threshold set using the onboard potentiometer.