The Octopus MQ3 Alcohol Sensor Brick from ElecFreaks is an analogue gas sensor module with high sensitivity to alcohol vapour. It outputs an analogue voltage proportional to the detected alcohol concentration, making it straightforward to interface with Arduino and other microcontrollers.

The MQ3 sensor element has low sensitivity to benzene and other gases, providing reasonable selectivity for alcohol detection applications. The brick-style form factor includes a 3-pin connector for easy plug-and-play wiring.

Key Features

• MQ3 Alcohol Sensor – High sensitivity to alcohol vapour
• Analogue Output – Voltage proportional to detected concentration
• Fast Response – Quick detection with stable, long-life sensor element
• Simple Interface – 3-pin analogue connection, 5V powered
• Brick Form Factor – Octopus series compatible for easy integration

Specifications

• Sensor: MQ3
• Detection Target: Alcohol vapour
• Interface: Analogue
• Supply Voltage: 5V
• Dimensions: 42.4 × 31.4mm

Ideal For

• Alcohol vapour detection experiments
• Air quality and gas sensing projects
• Arduino sensor prototyping

Package Contents

• 1× Octopus MQ3 Alcohol Sensor Brick