{"title":"Gravity: Arduino LPG Gas Sensor (MQ4)","handle":"gravity-arduino-lpg-gas-sensor-mq4","url":"/products/gravity-arduino-lpg-gas-sensor-mq4","description":"                INTRODUCTION               This is an Arduino CH4 gas sensor.  It uses MQ4 probe which is able to detect nature 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.             Improvement List                Standard assembling structure (Times-of-5mm Center distance between two 3mm(0.12\") mounting holes)         Easily recognitive interfaces of sensors (\"A\" for analog and \"D\" for digital)         Icons to simplely illustrate sensor function          High quality connector         Immersion gold surface                      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: 40x20mm(1.57\"x0.79\")               DOCUMENTS                 Wiki Doc       MQ4 datasheet               SHIPPING LIST                 Arduino CH4 Gas sensor (MQ4) x1         ","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":9998,"title":"Default Title","sku":"DF-SEN0129","price":11.45,"on_sale":false,"in_stock":true,"available_quantity":380,"option1":"Default Title"}]}