Recognized for intelligent design and the best materials at the prestigious Red Dot Awards, European Product Design Awards and Ambient Awards at CES Las Vegas, Linus is a smart but discreet lock for almost any entrance door. Available in black and silver, Linus is the starting point for today's modern and stylish home. It's a secure lock that allows you to lock and unlock your door, no matter where you are. Enter without a key, see who enters and when, grant virtual guest keys and check whether the door is open or closed. All this is possible via the Yale Access app. Once connected to the app, customers can secure, monitor and manage access to their home via their smartphone, from anywhere in the world. Features: Smart Loocking-Turn your smartphone or Apple Watch into a key. Lock and unlock your door - no matter where you are, with the Yale Access app. Requires Yale Connect Wi-Fi Bridge for remote functionality AUTOMATIC LOCKING AND UNLOCKING - When you return home and walk up to your door, automatic unlocking will unlock the door thanks to geolocation (as soon as you and your smartphone are near the door), so there's no need to fumble with keys. Possibility of activating the automatic lock when the door closes. SECURE AND RELIABLE - the Yale Access account is protected by two-factor authentication, which means that users will be asked to verify their identity with an email or phone number. In addition to the security offered by Bluetooth, we use AES and TLS encryption. If you lose your phone, you can deactivate the Yale Access app and all the virtual keys at any time. GRANT ENTRY FROM ANYWHERE - Send secure keys to friends, family or people you trust instantly, all from the Yale Access app. Manage and schedule access at any time. INSTALLATION - It's easy to install over the existing cylinder lock on the inside of the door so you can keep and use your original keys. INSTANT ALERTS - If anything changes with the status of your door, you'll be the first to know. DOORSENSE TECHNOLOGY-Allows you to know if the door is securely closed. If something unexpected happens, like leaving the door ajar, you'll be the first to know. COMPATIBILITY-Yale partners with leading smart home systems, voice assistants and rental and hosting platforms for effortless lock control and access management. Requires Yale Connect Wi-Fi Bridge for remote functionality and integrations such as Voice Assistant BATTERY LIFE-Notifications when the battery is running low so you can proactively replace it. Battery life depends on the number of turns per lock, how smoothly the door is opened and the number of openings per day. Based on normal use, the batteries last between 6 and 9 months. compatible with a wide variety of doors. Yale Access App