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2. Video door-phone - Wikipedia

   en.wikipedia.org/wiki/Video_door-phone

   Video door entry consists of both outside and indoor elements: an outdoor panel on the outside, an electronic lock release, and an indoor monitor. The outdoor panel or street panel is installed beside the entrance door or gateway and incorporates different elements ready for use in any climate conditions: one or several pushbuttons to make the call (usually one per home or apartment), a micro ...

3. Smart lock - Wikipedia

   en.wikipedia.org/wiki/Smart_lock

   A smart lock is an electromechanical lock that is designed to perform locking and unlocking operations on a door when it receives a prompt via an electronic keypad, biometric sensor, access card, Bluetooth, or Wi-FI from a registered mobile device. These locks are called smart locks because they use advanced technology and Internet ...

4. Home security - Wikipedia

   en.wikipedia.org/wiki/Home_security

   A home security camera system software on a Windows laptop for monitoring. Home security includes both the security hardware placed on a property and individuals' personal security practices. Security hardware includes doors, locks, alarm systems, lighting, motion detectors, and security camera systems. Personal security involves practices like ...

5. Real-estate lock box - Wikipedia

   en.wikipedia.org/wiki/Real-estate_lock_box

   A realtor lock box hanging on the doorknob of a house for sale A real-estate lock box is a padlock -shaped box that generally hangs around the doorknob of a house that is on the market . The device holds the keys to a house to allow common access for all real estate agents , while continuing to keep them secure. [ 1 ]

6. Electronic lock - Wikipedia

   en.wikipedia.org/wiki/Electronic_lock

   Electric locks may be connected to an access control system, the advantages of which include: key control, where keys can be added and removed without re-keying the lock cylinder; fine access control, where time and place are factors; and transaction logging, where activity is recorded. Electronic locks can also be remotely monitored and ...

7. Electric strike - Wikipedia

   en.wikipedia.org/wiki/Electric_strike

   Also called fail-open. In this configuration, applying electric current to the strike will cause it to lock. It operates the same as a magnetic lock would. If there is a power failure, the door opens merely by being pushed or pulled. A new trend is a strike that is quickly reversible from fail safe to fail secure (and back again if needed).