You need Nuki Smart Lock 3.0 or Nuki Smart Lock 3.0 Pro.
No need to worry, as even when you are out you always have a clear overview via the app of the status of your door
"unlocked", "locked" or "door open" update are shown with a dedicated icon in the Nuki app
Get notified if your door is open longer than usual or if the door sensor detects movement at the door.
You can choose to be notified
1) When door is open for a while
2) The locked door opens
3) Door is locked while open.
Low battery consumption with a duration of 2 years.
The battery level is displayed in the app, if the battery level drops below 20%, the app reminds you to change it. The sensor is either in sleep or active state, most of the time, it is in sleep state and therefore consumes almost no power, it is only active when a state change occurs and automatically returns to power saving sleep mode.
Only compatible with versions 3.0 and above
It can only be set up using the Nuki app because you need to be within Bluetooth range of the Smart Lock 3.0 (Pro).
Tamper detection and removal notification This means notify if the sensor has been tampered with by a third party. As soon as the sensor is removed from the door, this is recorded in your Smart Lock, this also distinguishes it from the sensor that was in the Smart Lock 2.0 package
Installation inside the room, with an adhesive pad one piece of the sensor on the door frame and the other on the door
Delivery contents
1x Nuki Door Sensor
1x 3.6V Lithium Battery (½ AA ER14250)
1x user manual