The addition of an aftermarket car alarm using just the basic features can significantly increase your vehicle’s security. Most are designed only to prevent vehicle theft and are not designed to protect your belongings.Īftermarket alarm systems offer a wider array of components and features that can be added to beef up your security. These features are usually limited to 1-way remote door locks, 1-way remote start, starter/injector kill, and horn trigger. OEM car alarms typically come with basic car alarm features. The control module is what sends the signal to the siren to alert you (and the neighborhood) that someone is tampering with your car. An aftermarket car alarm is wired into your vehicle by a professional installer who connects the door, shock, and any other sensors you need to the control unit. A basic car alarm is made of up many components, but the most important parts you should keep in mind are the sensors, the siren, and the control unit.
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