See Random Encryption

Prevents a thief forcing a driver to hand over his keys and driving off with the car. ANTI SCAN:

If the power to the alarm is disconnected it remains in the same state when it is reconnected so that the alarm cannot be disarmed by disconnecting and reconnecting the power. AUTO RE-ARM:

An output that be controlled from the remote control. Useful for control of electric boot releases, add on remote start modules, neon lights etc. BATTERY BACK-UP:

A device to detect when the cars bonnet is opened. BOOT RELEASE:

Short for Central Door Locking

Most alarms will also control your cars central locking so that the doors are locked and unlocked when the alarm is armed and disarmed. COMPACT ALARM:

A method of overriding the alarm should the remote control fail to function or is lost. IGNITION LOCKING:

Cuts a vital electrical circuit off preventing the engine from being started. LAST DOOR ARMING:

Flashing light usually installed on the dashboard to indicate that the alarm is switched on. MICROWAVE DETECTOR: