That's it! When the anti-theft USB key isn't inserted, power is prevented from reaching the car's fuel tank and fuel pump, effectively keeping your vehicle shut down. When inserted, the anti-theft USB key sends a wireless signal to the sensors, enabling everything and letting you drive normally. In addition, the wireless signal frequency used is completely different from other signal frequencies in the car and won't affect (or be affected by) other devices.
Manufacturer Specifications Ports/slots: GND, fuel tank connector, fuel pump connector
Buttons/switches: No
Package Contents Fuel cutoff sensor
Car cigarette adapter
USB key x2