Works via Bluetooth. That means you only have to get close to the door and the Nuki opens. The mobile phone does not need to be taken out and the app does not need to be opened or open.
Dear Reinerbieri
Unfortunately this is not possible. With Nuki, you can only open the lock with the key if this is also possible otherwise (so-called emergency function).
No, the bridge is not necessarily required.
Without the Bridge, the SmatLock only has Bluetooth (up to 8-10m inside the door and 1-2m in front of/through the door) connection to the smartphone (or other Nuki accessories).
With the Bridge, the lock connects to the wireless network (or internet) and is then controllable from any location.
You must have your key. However, your phone app will warn you well in advance when the batteries are low. I highly recommend you have 2 sets of the suggested Panasonic eneloop pro rechargeable.
Yes, I installed the Smart Lock on my front door with (Kaba) knob last week. You can get the adapter for free on the Nuki website. Contrary to the information there, I received it at the same time as the order on Digitec (2 working days).
Yes, two turns can be set. It is also possible to optionally have only 1x closing or always 2x closing, depending on your wish/configuration. If the lock of the security door is difficult to turn due to additional bolts, this can of course shorten the battery life of Nuki (should be replaced in time)... but it should basically work without any problems.
If the door latch can be retracted with 2.5x turns, Nuki can even release the door completely from the lock and open it by itself (e.g. using Siri/Alexa when both hands are full).
With an additional small magnet on the door frame (included in delivery) Nuki also detects if the door is open or closed and can close it automatically if the door falls into the lock.
Nuki can also calibrate itself (number of revolutions etc..). So it does not have to be configured manually.
According to our own research, this burglar protection is unfortunately only compatible with the following Smart Home services:
Google Home
Amazon Alexa
Apple HomeKit
IFTTT
Nuki