Abstract: In today’s world, everyone is busy in their own life that people rarely take care of using resources effectively. We know gas is a useful component in environment. Some gases do not cause any harm if emitted in excess amount but some do. Gas like LPG is used household purpose for cooking food. Not only in household purpose but also in hotels, restaurants, hospitals, etc where there is human interaction. Also we can see CNG operated vehicles. If there is any amount of leakage of these type gases it can cause a huge loss to life and property. So what if we get a way to reduce or abandon the chances of this loss.

Keywords: Arduino, UNO, MQ2, CNG, LPG.