MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm.
This sensor has a high sensitivity and fast response time. The sensor’s output is an analog resistance. This is a module not just the sensor meaning that it comes already installed in a break out board and all you need is to connect the output to an analog input pin in your micro controller board.
MQ-4 is used in gas leakage detecting equipments in family and industry, are suitable for detecting of CH4,Natural gas.LNG, avoid the noise of alcohol and cooking fumes and cigarette smoke.
MQ4 Smoke Sensor Module Features
- Power Supply: 5V
- Interface Type: Analog
- Pin Definition: 1-Output 2-GND 3-VCC
- Wide detecting scope