Anti-theft device

Vehicle anti-theft device which comprises a remote control (1) and a data switching exchange (10), with the remote control having a switch, a button for either automatic or manual mode operation, an emitter module and another radio frequency receiver, a supply battery and jacks to connect the supply with booster battery, the data switching exchange (10) incorporating speedometer signal inputs, a door switch, a sound emitter outlet, ground connection (14), connection for the radio frequency receiver antenna, supply, an outlet for ignition cut out, and activation of hazard lights.