We are offering gas safety device this device fit on gas cylinder before regulator. There is a meter which tell us the gas in cylinder that how much left in it.2nd thing if there is a miner leakage it will auto cut off the gas and help to escape from big accident. 3rd thing if we forget to light the burner after on it or by mistaken it is on then without gas safety device there will be blast when u use any switch for light there will be explosion but if our product there then it will fire only nearby burner not even a feet far from there. So it save life and gas also.