Yale Linus Smart Lock Silver EU. Smart door lock for 17 mm Euro cylinder. Controlled via the Yale Access App (for iOS and Android). Communication via Bluetooth 4.2. Utilizes Bluetooth Low Energy (BLE) technology as well as AES and TLS encryption. Status notifications for doors left open or accessed. Virtual key for guests, send your guest a temporary key through the Yale Access App. The activity feed shows who opened the door and at what time. Automatic locking and unlocking when you arrive and leave. The Auto-Lock feature can automatically secure your door when you leave the house. When you return and approach your door, Auto-Unlock will unlock it thanks to geo-fencing. Remembering to lock the door in the morning? Not necessary. But if you want to check later, you can take a look with the Yale Access App. Expecting guests? Send a virtual key. Discover a smarter way to let your loved ones in. With the Linus Smart Lock, you can grant secure keyless access from anywhere in the world when Linus is paired with the Yale Connect Wi-Fi Bridge. Welcome your guests with a temporary virtual key before they arrive. Time-based access makes check-in and check-out for vacation rentals easy and secure. Your guests can come and go as they please, and you won’t have to worry about lost keys. Full control at your fingertips. The days of rummaging through your bag are over. Thanks to the Linus Smart Lock, your smartphone or Apple Watch is now your key. All you need to do is approach.