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Smoke Gas Sensor
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Smoke Gas Sensor

Technical Documents

MQ-2 Smoke Sensor Module

Application Resources

MQ2 Gas Sensor Module

EMS-00010-A

(Last updated) Jun 20, 2026

Smoke Gas Sensor

Combustible gas and smoke detection

Subcategory
EMS - Input: Sensors

Description

The MQ-2 Gas Sensor Module is used to detect combustible gases like LPG, methane, propane, hydrogen, alcohol, and smoke. It works using an SnO₂ sensing layer that changes resistance when gas is present. It provides analog and digital outputs and is commonly used in gas leak detection, safety systems, air quality monitoring, and Arduino projects.

Manufacturer Details

Manufacturer Part Number
Hanwei Electronics MQ-2
Winsen Electronics MQ-2
SparkFun Electronics SEN-09404
DFRobot SEN0134

Technical Specifications

Product Type Gas & Smoke Sensor
Model MQ-2
Detectable Gases LPG, Methane, Butane, Smoke
Detection Range 200 – 10000 ppm
Operating Voltage 5V DC

Part Family Variants (8)

Variant Title Status
EMS-00010-A Current Smoke Gas Sensor Published
EMS-00010-B MQ-3 Sensor Published
EMS-00010-C MQ-4 Gas Sensor Published
EMS-00010-D MQ-5 Gas Sensor Published
EMS-00010-E MQ-6 LPG Gas Sensor Published
EMS-00010-F MQ-7 Sensor Published
EMS-00010-G MQ-135 Sensor Published
EMS-00010-H Hydrogen Sensor Published

Frequently Used Together

Frequently paired together in real-world projects.

ED - Electronic Device
Methane Gas Sensor

EDT-00001-C

Methane Gas Sensor

Detects methane and CNG gas

Category: ED - Electronic Device

View Part
EM - Electronic-Electrical Modules
MQ-2 Gas Sensor

EMS-00001-A

MQ-2 Gas Sensor

Combustible Gas & Smoke Detector

Category: EM - Electronic-Electrical Modules

View Part
ED - Electronic Device
Flammable Gas Sensor

EDT-00001-A

Flammable Gas Sensor

Gas Sensor Device- Methane, Butane, LPG

Category: ED - Electronic Device

View Part
ED - Electronic Device
Alcohol Gas Sensor

EDT-00001-B

Alcohol Gas Sensor

Detects alcohol vapor levels

Category: ED - Electronic Device

View Part
ED - Electronic Device
Gas Leakage Sensor

EDT-00001-D

Gas Leakage Sensor

Detects combustible gas leaks

Category: ED - Electronic Device

View Part
ED - Electronic Device
LPG Gas Sensor

EDT-00001-E

LPG Gas Sensor

Detects LPG gas leaks

Category: ED - Electronic Device

View Part

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