Octopus Electronic Bricks! You can use them build electronics projects just as easy as piling bricks! By using Octopus electronic bricks, you may connect Arduino or compatible boards easily with various digital, analog and I2C/Uart interfaces. These breadboard-less firm connections includes an extensive collection of modules like potentiometers, sensors, relays, servos, and even buttons. Just plug and play!
The MQ-2 analog gas sensor is used in gas leakage detecting equipment in consumer and industry markets, this sensor is suitable for detecting LPG, i-butane, propane, methane ,alcohol, Hydrogen, smoke.It has a high sensitivity and fast response time.And the sensitivity can be adjusted by the potentiometer.
Please visit the ElecFreaks wiki page for more info about this product. It will be appreciated if you can help us improve the documents, add more demo code, or create tutorials.