1. Suitable for: This keyless access system is universal for most vehicles. A keyless system is not a conventional key, but a smart key or a smart card. If your car is a end model, it is the key used to unlock the door. 2. Main functions: Keyless entry function: a) When the key is near the vehicle, the alarm status is automatically deactivated. b) Automatic window and reinforcement function. Wireless remote control function: a) Remote locking/unlocking. b) Automatic search function. Antitheft alarm function. Other functions: a) Remote battery discharge request. b) Online diagnostics. c) Powersaving mode. 3. Operating principle 1: A chip is installed in the ignition key, and each chip is assigned a unique ID. The vehicle can only be started if the key chip's ID matches the engine's ID. Otherwise, the engine will not start. When the owner turns the key to start the vehicle, the base station sends a lowfrequency signal to initiate the authentication process. 4. Operating principle 2: The transponder in the key is powered by the lowfrequency signal from the base station. During authentication, the key's transponder first transmits its ID number. After verification by the base station chip, the base station sends a sequence of random numbers and a MAC address, and the device responds accordingly. For security, all transmitted signals are encrypted.