Change over switch has compact and beautiful design is to be fixed on the dashboard of car.It is a 3 position changeover switch for GasPetrol. Also manual push button switch to engine priming For carburetor car. This switch has a pulse sensing mechanism, which cuts off the supply of gas, in case engine stall or fail to start within 2 sec. For MPFI Cars. This is a Micro Processor based switch, for MPFI Cars. Here the Car start on petrol & change over to gas on declaration automatically.