Security features: single-walled key cabinet 1.2 mm solid steel Door leaf thickness: 1.2 mm Door with hinges, top and bottom opens with fingerprint - several can be stored Opening via external power supply possible 4 x 1.5 volt AA batteries excl. Fingerprint opening: 2 fingerprints with manager function and 8 fingerprints for users can be stored. Fingerprints with manager function can open the Key Pro, save user fingerprints;and delete them. Users can open the key cabinet but cannot save or delete fingerprints. Installation: prepared for wall mounting incl. mounting material Accessories: hook strips not adjustable 24 hooks incl. The Rottner Key Pro 24 is the ideal storage place for up to 24 keys, which are stored neatly and clearly on hook strips. The key feature of this key box is the fingerprint opening. Simply touch the small safe and it opens! Misplacing or losing keys, forgetting the code - these are things you no longer have to worry about. If the Key Pro 24 does not open for any reason, an emergency power supply is possible. One touch to the key!