MQ-5 Gas detection module: liquefied methane

Features 

High sensitivity to LPG, natural gas, urban gas;
Low sensitivity to alcohol, smoke;
Quick response;
Stable and long-lasting;
Simple Circuit;

Application

Used in residential and industrial gas leak detection equipment, suitable for LPG, natural gas, natural gas detection; protected from alcohol, smoke and cigarette smoke.

Specifications

Standard conditions:
Circuit voltage 5V ± 0.1
Heating voltage 5V ± 0.1
Load resistance 20KΩ
Heating resistance 31 ± 10%
Power consumption less than 800mW
Medium conditions:
Temp. Use -10 ℃ - 50 ℃
Temp. Storage -20 ℃ - 70 ℃

Dimensions: 32x20x22mm

Wiring

Tutorial & Code

http://www.circuitstoday.com/interfacing-mq5-lpg-sensor-to-arduino

Datasheet

https://www.parallax.com/sites/default/files/downloads/605-00009-MQ-5-Datasheet.pdf