1. 2 position gas/petrol switch with two leds which indicate the type of fuel in use 2. Electronic safety device that interrupt 2 position gas/petrol switch with two leds which indicate the type of fuel in useElectronic safety device that interrupts supply to the gas solenoid valves in the event of accidental engine cut-off. Petrol starting, and automatically converting to gas on deceleration. Gas starting in case of emergencyDisplay of the level of gas in the tank by means of 5 leds