In article ,
"Janice" writes:
Hi I am getting deaf (old age) and can no longer hear my ding dong door bell
when I am in the kitchen. I bought a cheap wireless door chime from Lidl but
it is not much use. When someone comes to the door it makes my wireless
internet drop out, also it now needs a new battery and it costs more than I
paid for the door chime.

In my kitchen cupboard just under the consumer unit is the bell transformer,
installed when the house was built so all the wiring is cunningly hidden.

So I thought, is it possible to connect a second bell to the transformer so
that the old ding dong bell just inside the door and a new bell in the
kitchen will both ring at the same time? If when someone is pressing the
bell push at the front door and cannot hear a bell ring they think the bell
is broken and batter on the door so I want the ding dong bell at the front
door to ding dong as well. I think that is why the battery on the wireless
one does not last long because it could not be heard at the front door.

And I worked out that the transformer's electricity usage is less than the
cost of batteries and I can get a doorbell from a friend for nothing before
they find out that their new wireless door bell will cost them more in
batteries :-)

So if it is possible how would I wire it up? Would I just disconnect one
wire from the transformer and connect it to the bell and connect a wire from
the bell to the transformer?

4 6 8 volts .63amp transformer

You may well find you can simply wire another 'ding-dong' type
bell in series at the transformer, ideally one which is identical
to the one you already have. You might need to increase the
transformer voltage tap.

Alternatively, you could change the 'ding-dong' for a bell, which
might be more audiable. Bells don't run in series very well though,
so you'd need to be able to hear the bell from the kitchen.

Another possibility -- if the kitchen would be a better place for
the ding-dong, you could move it there, although if the caller
can't hear anything when they push the button, they might well
push it several times and knock.

I've always wondered who would be the first person to do a Part P
building notice application in order to install a door bell ;-)

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]