Technical Documents

MQ-3 Alcohol Gas Sensor Module

EMS-00010-B

Name: Alcohol Gas Sensor Module
Brand: Generic
SKU: EMS-00010-B
Availability: InStock

(Last updated) May 09, 2026

Alcohol Gas Sensor Module

MQ-3 Alcohol Gas Sensor

Description

MQ-3 Alcohol Gas Sensor Module is used to detect alcohol concentration in the air and provides both analog and digital outputs. The module is based on the MQ-3 gas sensor which uses SnO₂ (Tin Dioxide) sensing material. The sensor operates from 2.5V to 5V and includes an onboard potentiometer to adjust the digital output threshold level.

Manufacturer Details

Manufacturer	Part Number
Hanwei Electronics	MQ-3
Winsen Electronics	MQ-3
Waveshare	MQ-3

Vendor Suppliers

Amazon ( india ) Amazon ( Japan ) Amazon ( USA ) Amazon ( canada ) Robu.in ( India ) FlyRobo ( India )

Application Resources

Gas Sensor MQ-3 gas sensor MQ-3 Alcohol Sensor Module

Technical Specifications

Operating Voltage (V)	2.5 to 5
Additional Specs	Output Pin: Analog and digital, Gold pin connectors, 2.54 mm pitch, Boost Converter Chip: PT1301
Board Size (mm)	40 x 21 mm
Mounting Hole Diameter (mm)	2 mm
Interface	Digital Output, Analog output, VCC Positive power supply (2.5V-5.0V), Power ground