MQ-2 Smoke Gas LPG Butane Gas Sensor Detector

Using a simple voltage divider network, concentrations of gas can be detected. MQ2 Gas sensor works on 5V DC and draws around 800mW.

Give your next microcontroler project a nose for gasses with the MQ2 Gas Sensor Module. This is a robust Gas sensor suitable for sensing LPG, Smoke, Alcohol, Propane, Hydrogen, Methane and Carbon Monoxide concentrations in the air. If you are planning on creating an indoor air quality monitoring system; breath checker or early fire detection system, MQ2 Gas Sensor Module is a great choice.

Features

• Using high-quality dual-panel design, with power indicator and TTL signal output instructions
  
• There are four screw holes for easy positioning
  
• Analog output voltage with the higher concentration of higher voltage
  
• TTL output valid signal is low. (Low-level signal when the output light can be directly connected to the microcontroller or relay module)
  
• The switching signal having a DO (TTL) output and analog output AO

Special note

After the sensor is powered, wait about 20S until measured data becomes stable.
Heat in the sensor is a normal phenomenon due to the internal heating wire.

Specifications

• Size: 32mmX22mmX27mm
  
• Chip: LM393, ZYMQ-2 gas sensors
  
• Working voltage: DC 5V
  
• AO output :0.1-0 .3 V (relative to pollution), the maximum concentration of a voltage of about 4V
  
• DO output: TTL digital 0 and 1 (0.1 and 5V)
  
• Input voltage: DC 5V 150mA

What's in the box?

1 x MQ-2 Gas Sensor Module

Resources

Getting started with MQ-x
Analog to Digital converter not included
Note: Stock is currently available in South Africa for national shipping!