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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.
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...
I have just removed the keypad module (art.3188) on a comelit vandalcom audio intercom and blanked it off. I installed a siemens K42 keypad lower down on the post (as customer unwilling to pay for a replacement comelit module in excess of £400.) I stupidly forgot to take a picture of the wiring...
Hi Guys,
Does anyone have experience with Bticino intercom systems? I am trying to replace my old Bticino unit with newer model as per the diagram below. Everything seems to work fine, except the most important part. When a visitor calls from the main entrance the new intercom unit does not...
I have an old 3 wire intercom station which I removed, and purchased a new one. Happens that the new one has 4 wires.
Is it possible to connect my 4-wire intercom station to the 3 wires from the wall?
Also if anyone has the internal switch schematic, that would help diagnosing this if its possible.
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...
hi,
We have recently been asked to take over maintenece of a Gemini access control on a large block of flats. We have never used this system before and on looking u the company they were disolved in 2013. Our problem comes when we need to replace one of the handsets (that seems to be required...
Hello
In my house I have a Comelit 5 wire intercom installed which the intercom panel has been smashed up
http://www.onlinesecurityproducts.co.uk/co...rfaceflush.html
My plan is to leave the handset, transformer in and just replace the panel with a Commax panel...
has any one here got any experience with the entryview 5 intercom unit?
did one the other day for the 1st time ever. connected power supply, the transformer might a very low humming noise then it popped and that was it! tranny was dead!
has this happened to any1 else,
Can wrong...
Hi there anyone with any experience with door entry systems? I installed a thob sytem with a card swipe one side and an push to open the ither side in a shop this afternoon just wondering if the varistor is needed in this kind of system if so what does it do. On the instructions it's says place...
Hello again,
To wire an simple intercom system to 3 flats, what are the cable requirements. Before i have just taken a cat5 from each flat to the panel by the front door. At the front door a supply will be provided for the panel. Am i on the right lines, If not could some explain a or tell...
Hi all
I would like some help wiring two old intercom telephones together.
Power goes into only one of the phones as a 6v mains adaptor supply or 4 x AA batteries. The 2 phones then connect by an unknown amp, 2 core cable.
Basically I am wanting to know how far apart these phones could...
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Hey all,
I do electrical maintenance for a company which does warranty work for all the major house builders over the country i.e Taylor Wimpey, Barratt Homes etc.
I haven't done intercomm systems before so i need to go on a few courses and was wondering what the most common brands and types...
I am posting on behalf of a family member. They left the dog at home and he got restless and managed to pull the intercom off the wall. There are 5 wires which run from the bell to the intercom which have come out. They are coloured as follows:
blue and white
orange
red and white
brown and white...
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