Remote Keyless Entry for Your Car

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Key to Freedom and Convenience
If you have a remote keyless entry for your car, you no doubt are well aware of the convenience and peace of mind it provides. The remote keyless entry device allows you to unlock your door, activate your alarm, and possibly even start your engine before you even get to your vehicle. And if you happen to be loaded down with packages or toting a sleeping child, that assistance is worth a lot!
When an automobile is equipped with an RKS or remote keyless entry system, several very basic functions of a standard car key are performed by the remote itself without having to make physical contact with the vehicle. Most systems operate off a key fob, which is a small plastic device attached to your key ring. The typical key fob has several buttons, each of which is used to perform one of the various functions of the system. In general, the buttons will include one that locks the door and another that unlocks the door, one that may open or close the door (often in the case of a mini van with automatic doors), still another that can be used to release the trunk or tailgate, one to set the car alarm, and a red button that triggers a panic alarm. Some keyless entry systems can even be combined with the security system of a building or house, a remote garage door opening system, or a unit to remotely activate lights inside the building.
Remote keyless entry systems are standard or an optional upgrade on over 70% of vehicles manufactured today. Each and every system has its own unique code that is transmitted when one of the buttons is pushed. The code is then picked up by the receiver located inside the car. Since the remote and the receiver are both programmed to the same code for each activation, when the code sent from the fob matches the code in the receiver, the assigned function happens. Technology in this area has become so sophisticated that the rolling code system used in these devices (meaning the codes are reset after each activation) creates almost a trillion possible code combinations!
Aside from the ability to trigger a panic alarm or arm your car's theft deterrent system with the push of a button, a remote keyless entry offers another safety feature--a flashing LED light inside the vehicle, indicating the system is set. This alone may make a potential thief bypass your car.