MQ-3 Gas detection module: alcohol, ethanol

Features

High sensitivity to alcohol and low sensitivity to petrol;
Fast response and high sensitivity;
Stable and long-lasting;
Simple Circuit;

Application

Suitable for alcohol testing; etilotest.

Specifications

Standard conditions:
Circuit voltage 5V ± 0.1
Heating voltage 5V ± 0.1
Load resistance 200KΩ
Heating resistance 33Ω ± 5%
Power consumption less than 750mW
Medium conditions:
Temp. Use -10 ℃ - 50 ℃
Temp. Storage -20 ℃ - 70 ℃

Dimensions: 38x25x25 mm

Wiring

Tutorial & Code

https://www.teachmemicro.com/mq-3-alcohol-sensor/

Datasheet

https://www.sparkfun.com/datasheets/Sensors/MQ-3.pdf