FeaturesCan be easily retro-fitted – no drilling or screwing requiredMaximum security thanks to the certified encryption conceptAutomatically lock and unlock your doorAssign up to 200 permanent, temporary or recurring virtual keysUp to 4 months battery lifeThe Nuki Home Solutions GmbH Smart Lock 3.0 Euro for Euro profile cylinder, turns your smartphone into a smart key. The electronic door lock is installed over your existing lock cylinder from the inside in a matter of minutes and is not visible from the outside. With the free app (iOS/Android), you can open and close your door without a key. You can also create up to 200 permanent, time-limited or recurring virtual keys with the Nuki app. This means your family and friends, dog sitters and cleaning staff have access exactly when you want. It meets the highest possible security standards thanks to state-of-the-art encryption mechanisms. If required, you can remove your Nuki Smart Lock without leaving a trace, making it ideal for rental properties.Requirements: iOS or Android smartphone Compatibility: Euro profile cylinder with emergency function, Swiss round profile with priority function, UK oval cylinder with emergency function, knob cylinder Communication: Bluetooth 5 Locking modes: Unlock, lock, open door, Auto Unlock, Lock ‘n’ Go, Auto Lock, scheduling Included with delivery: 1x Nuki Smart Lock 3.01x Mounting plate – screw-fixed variant 1x Mounting plate – adhesive variant 1x Allen key 1x Instructions