intercom

An intercom, also called an intercommunication device, intercommunicator, or interphone, is a stand-alone voice communications system for use within a building or small collection of buildings, functioning independently of the public telephone network. Intercoms are generally mounted permanently in buildings and vehicles. Intercoms can incorporate connections to public address loudspeaker systems, walkie talkies, telephones, and to other intercom systems. Some intercom systems incorporate control of devices such as signal lights and door latches.
Intercoms are used on a wide variety of properties, from houses that only require one connection between a resident and the property's entrance to multi-unit apartments that require intercom hardware to be installed in every individual apartment. Some are equipped with video, and its wiring (electrical installation), can be connected to the outside with few pairs (4-6 pairs) while controlling an electric strike. The latest generations are even compatible with computers, and some models include TCP/IP compatibility.

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  1. O

    Connect Bell intercom to maglock.

    I used to fit Bell door entry systems all the while about 20 years ago but I'm a bit rusty on them now, am I correct in saying if you use a DC power supply the +12V goes straight to a yale type lock and the wire to the handset (Z) grounds the lock to the 0V rail completing the circuit and...
  2. US1549

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  3. Kallo444

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  4. M

    Wiring a 4 wire intercom station to a 3 wire.

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  5. B

    Wiring Ring Pro using existing intercom wiring

    Hi folks, I just need to sanity check what I'm going to do :) So I've just bought a Ring Pro Doorbell and it's going to replace a broken intercom system: https://www.tlc-direct.co.uk/Technical/DataSheets/ESP/enterview3manual.PDF Am I oversimplifying it to say that if I unplug the internal...
  6. S

    Gemini access video intercom

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  7. S

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  8. E

    entryview 5 intercom

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  9. D

    Magnetic lock intercom

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  10. R

    intercom system

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  11. G

    wiring two old intercom telephones

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  12. R

    Intercom systems - Flats

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  13. K

    Dog ripped intercom off the wall. where do wires go?

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