There are many different types of car alarm systems. However, they can be broken down into two main categories - passive and active. A passive alarm is active after the car ignition is turned off and all doors are shut. An active alarm has to be activated by pushing a button to arm or disarm it.
It is very important to have an alarm system for your car, especially if it is new and one that thieves like to steal. It should be the first thing you purchase after you purchase the car. A good alarm system will cost at least $100, but cost should not be a factor, since a stolen car is worth nothing.
You can either have the alarm installed where you purchased it (another $100 or so), or you can install it yourself. Alarms usually come with detailed instructions on installation, and some even come with a how-to video.
There are many features available on the different car alarm that is available on the market and new features are developed everyday. Some of the common features are an air horn that can be used on the interior or exterior of a vehicle to call attention to a thief. The anti-code grabbing is a method that changes the alarm code every time it is armed or disarmed. This makes it impossible for a thief to figure out your code to disable it. The active re-arm is a system that automatically sets the alarm to its on position after it has been disabled. Carjack protection is a feature that causes the engine to turn off and a siren to ring out if a vehicle is taken by anyone illegally, and the brain is the main box of an alarm that controls all of the sensors and equipment associated with the alarm system. There are many other features associated with car alarm systems, and it is wise to thoroughly read the manual that comes with the unit that you purchase.
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