Smart key PKE Car Alarm system with Passive Keyless Entry (PKE), remote start and keyless go to upgrade your vehicle with modern convenience and enhanced security. The PKE feature automatically unlocks the doors when you approach within 3-6 feet with the key fob and locks as you walk away. Key benefits - Hands-free access: automatically unlocks and locks the doors as you approach or depart, reducing fumbling with keys. - Remote start: pre-warm or pre-cool your vehicle for faster comfort when you arrive. - Keyless go: start the engine without removing the key fob from your pocket or bag. Important compatibility - Not compatible with double pulse unlock systems - Not compatible with pneumatic or vacuum locking systems - Not compatible with factory push start button vehicles - Not compatible with vans - Not recommended for luxury cars Remote start notes - Use remote start to pre-warm or pre-cool the interior. To use this feature, ensure the car’s air conditioning is turned on. Installation - This car alarm system requires professional installation. Please purchase only if you can arrange installation or can locate a trained installer or audio installer capable of performing the work. Use scenarios - Cold mornings: approach with the key fob, doors unlock automatically and the engine can be started remotely to pre-warm the cabin. - Hot days: arrive and have the cabin pre-cooled before you enter, saving time and improving comfort. - Hands full: rely on PKE and keyless go to access and start the vehicle without taking the key fob out. This description preserves the original features (PKE, remote start, keyless go) and cautions about compatibility, while presenting clear benefits, practical use cases, and installation requirements.