"Rob K" wrote
| I'd like to fit at least 1 (preferably 2) additional buzzers to my entry
| phone system. Alas the company that installed it are no more. The entry
| phone system feeds 6 flats. Its unlabelled but looks pretty generic so to
Usually you can, *if* it's a straightforward buzzer. Some door entry (NB
Entryphone is a trademark) systems use an audio signal through the earpiece
rather than a simple voltage.
| If anyone has access to simple entry phone wiring diagrams or may be able
| suggest a company that could help I'd be very grateful.
1. www.bstl.co.uk do probably the most generic door entry system around and
they have some quite nice looking extension sounders. Even if the panel
isn't theirs, there's a fair chance the innards are.
2. www.safelink.co.uk stock BSTL and many other systems and parts and will
supply to individuals.
3. www.bstl.co.uk and www.entryphone.co.uk have tech guides or wiring
(Writing off-line - some of those .co.uk might be .com)
Usually you will have a 4+n system, where the wires at the handset are
Common, Mic, Speaker, Lock, these are commoned to all handsets, and one wire
Call which goes from the panel button to one side of the buzzer. So you need
to wire buzzers in parallel between Call and Common wires.
Can you put up a photo of the handset and panel on the web somewhere?