Technical Documents

MQ-2 Official Datasheet (Hanwei) MQ-2 Sensor Technical MQ-2 Gas Sensor Module Datasheet

EMS-00001-A

Name: MQ-2 Gas Sensor Module
Brand: Generic
SKU: EMS-00001-A
Availability: InStock

(Last updated) Jun 11, 2026

MQ-2 Gas Sensor Module

Combustible Gas & Smoke Detector

Description

The MQ-2 Gas Sensor Module detects combustible gases such as LPG, methane, hydrogen, alcohol vapor, and smoke. It uses a SnO₂ sensing element and provides both analog and digital outputs with adjustable sensitivity. Ideal for gas leakage detection, safety systems, fire alarms, environmental monitoring, smart home applications, and Arduino-based electronics projects.

Manufacturer Details

Manufacturer	Part Number
Hanwei Electronics Group Corporation	MQ-2
Zhengzhou Winsen Electronics Technology Co., Ltd.	MQ-2

Vendor Suppliers

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

Application Resources

Gas Sensor Application Note MQ-2 Gas Sensor Arduino Tutorial

Technical Specifications

Sensor Model	MQ-2
Detection Range	300 – 10,000 ppm
Detectable Gases	LPG, Butane, Propane, Methane (CH₄), Hydrogen (H₂), Alcohol, Smoke, CO
Sensing Material	Tin Dioxide (SnO₂)
Operating Voltage	5V DC
Digital Output Voltage	0V or 5V (TTL Logic)
Analog Output	Yes
Sensitivity Adjustment	Onboard Potentiometer
Preheat Time	20 seconds (minimum)
Dimensions (mm)	36 × 20 × 21
Weight (g)	8
Shipping Weight	0.012 kg
Shipping Dimensions (cm)	4 × 4 × 4