This is an Arduino CH4 gas sensor. It uses MQ4 probe which is able to detect natural gas, CH4. It is less sensitivity in detecting alcohol, cooking fumes, and cigarette smoke.The sensitivity can be adjusted by the potentiometer. The output is proportional to the density of gas. You can use analog reading to read the data from this sensor. To ease the difficulty of using this sensor, a Gravity Interface is adapted to allow plug&play. The Arduino IO expansion shield is the best match for this senor connecting to your Arduino microcontroller. Standard assembling structure (Times-of-5mm Center distance between two 3mm 0.12\” mounting holes) Features Easily recognitive interfaces of sensors (\”A\” for analog and \”D\” for digital) Standard assembling structure (Times-of-5mm Center distance between two 3mm 0.12\” mounting holes) Icons to simplely illustrate sensor function High quality connector Immersion gold surface Connection Example – I/O Expansion Shield V7 Specifications Power supply: 5V Interface type: Analog Pin Definition: 1-Output 2-GND 3-VCC High sensitivity to CH4, Natural gas Small sensitivity to alcohol, smoke Fast response Stable and long life Simple drive circuit Size: 40 x 20mm Resources Product Wiki MQ4 datasheet Package Contents 1x Arduino CH4 Gas sensor (MQ4)

J905931090926Gravity: Analog CH4 Gas Sensor (MQ4) For Arduino