Transmission of RF Signals: When you press a button on your key fob, it sends a coded RF signal to your car. Each button typically corresponds to a specific function, such as locking or unlocking the doors, opening the trunk, or triggering the car's alarm.
Receiver in the Car: Your car is equipped with a receiver that is constantly listening for the RF signals from the key fob. This receiver is programmed to recognize the unique code transmitted by your specific key fob.
Code Recognition: When you press a button on your key fob, the RF signal transmits a unique code associated with that particular button and function. The receiver in the car recognizes this code and processes the corresponding action.
Action Execution: Once the receiver recognizes and verifies the transmitted code, it triggers the desired action based on the button pressed. For example, if you pressed the "unlock" button, the receiver will unlock the car doors.
Security and Encryption: Modern key fobs use advanced encryption and security measures to prevent unauthorized access or replication of the RF signals. The codes are typically encrypted and change each time the fob is used, enhancing security.
Proximity Detection: Many key fobs also utilize proximity detection, allowing the car to recognize when the fob is within a certain range. This feature enables you to unlock or start the car without physically pressing any buttons on the fob, as long as it's within the detection range.
Key fobs provide convenience and enhanced security for car owners, allowing for quick and easy access to the vehicle. Additionally, modern key fobs may offer additional features like remote start, vehicle locator, and panic alarms, further enhancing their utility and functionality.
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