Glossary

Auto Rearm

If your alarm is triggered or set off in any way. After it has finished giving its warning it will automatically rearm to continue providing protection if the potential thief should return.

Battery Back-up

This means the alarm has an inbuilt battery power source so should a potential car thief try disconnecting the battery this will not disable the alarm or prevent it from sounding off. This is also a useful feature for vehicles that are left standing and unused for a long time when the battery could go flat.

Central Locking Interface / Outputs

This means if your car has central locking then the alarm can be connected up to this so the car will lock remotely when setting the alarm. Sometimes additional accessories maybe required depending on whether the car has mechanical or electrical central locking.

Direct Switch Sensor

This is a switch that can be mounted in the bonnet or boot so if either is lifted it will trigger the alarm.

Dual Scan

See Microwave Sensor (Dual Scan)

Microwave Sensor

This is a sensor system that creates a mini electromagnetic force field within an area such as a car this looks for a physical mass to disrupt the mini electric waves in the car, such as someone getting in, which would then trigger the alarm. The same would happen if a window was broken.

Microwave Sensor (Dual Scan)

This uses a second electromagnetic wave which clocks the outside of a vehicle and would alert if anyone got too close.

Rolling Code Technology

This is where the unlock code between an alarm and the remote control changes each time so that someone else cannot intercept or grab the code being used to program their own device to deactive the alarm.

Shock Sensor

This is where the alarm looks for vibrations which can be caused by someone attempting to smash a window or indeed if someone should bump or crash into your parked car.

Ultrasonic

Sound waves emitted that cannot be heard by the human ear but which bounce off obstacles and can be used to calculate the location of objects. Bats and Dolphins use this technology to navigate. Should someone get into a car then they would disturb the ultrasonic sound waves and trigger the alarm. This would also happen if a window was broken too as the sound waves would escape.

Voltage Drop Sensor

When a car is parked it will either use no power or a very little and steady flow to maintain the cars clock for example. Should someone open a car door for example this would turn on an interior light which would require power from the battery causing the batteries voltage to drop and so triggering the alarm.