Gas Sensor MQ-2 Gas/Smoke Detector

Description

Gas Sensor Module suitable for sensing combustible gas, Smoke, Alcohol, Propane, Hydrogen, Methane and Carbon dioxide concentrations in the air.

• Includes two LED's to indicate power and gas alarm trigger
• Adjustable Gas level trigger can be used to fine tune gas sensitivity
• When gas exceeds trigger level TTL signal (D0) set HIGH
• Use the analog ping (A0) to continuously monitor gas levels
• There are four screw holes for easy installation

Perfect for use with to be used with and Arduino or with our Flex Radio module.

Wireless Gas Sensor

Here is a prototype set-up picture of the module connected to the Flex radio module.

Specification

• Product dimensions: 32 x 20 x 15 (L x W x H)
• Chip: LM393, ZYMQ-2 gas sensors
• Working voltage: DC 5V
• Detection of gas: combustible gases, fumes
• Detectable concentration: 300-10000ppm (flammable gas)

Electrical properties

• Input voltage: DC5V
• Power consumption (current): 150mA
• DO output: TTL digital 0 and 1 (0.1 and 5V)
• AO output: 0.1 - 0.3V (relative to pollution), the maximum concentration of a voltage of about 4V
• After the sensor is powered there is a 20 second warm up period before the sensor stabilizes, which is normal

Pinouts

1. CC: positive power supply (5V)
2. GND: power supply is negative
3. DO: TTL switching signal output
4. AO: analog signal output