These can have many features including:
- Keyless entry that enables you to open and lock the vehicle while arming or disarming the system. It could also allow you to open the trunk remotely.
- Electric scan prevention stops the use of scanning tools to duplicate your remote's signal.
- Passive arming -- if you forget to arm your alarm, it will arm itself automatically.
- Built-in kill switch that disables the ignition.
- Built-in fuel cut-off switch.
- A loud horn or siren that can be activated from the remote. This acts as a panic alarm.
- An impact sensor that sets off the alarm before the glass breaks.
- A proximity sensor that warns people when they get too close to the vehicle.
- A hood sensor that sounds the alarm if someone is tampering with the hood.
- A remote notification device that tells the owner if the alarm is going off.
- An LED warning light that notifies a car thief that your alarm is activated.
- Remote starting devices that will allow you to warm up your vehicle in the cold without the threat of someone stealing it.
More expensive alarm systems can include:
- Remote control of the vehicle: If the driver does not enter a code before starting, the alarm company is alerted and tracks the vehicle. With this system, the police can shut off the vehicle so the thieves can't escape. It also allows the owner to call the alarm company and shut off the car in case of a carjacking.
- This technology allows the owner to call and have the door opened or the vehicle started anywhere in the world.
- It will tell you where you are within 10 feet of your exact location and give you directions on how to get to your destination.
Before you buy an alarm system, contact your insurance company. With the right features, you may qualify for a discount.