On Tue, 13 Oct 2020 13:43:24 +0100, charles
wrote:

snip

Maybe an audio 'repeater' in / behind the bell push (cellphone
speaker?) would be better than a LED, even if it was only a momentary
'Beep', as you pressed the button?


A former colleague had the bell trigger a tape look of Big Ben striking
with a lagre loudspeaker fixed to the hall ceiling. That could be heard
down the gardeb.

I bet it could. ;-)

Mum has the old mechanical Westminster Chimes (is it?) (Ding dong ding
dong ... ding dong ding dong) and that's handy sometimes if you aren't
sure if you heard the first bit but it does seem to go in a bit if you
have.

Some elderly relies had a wind-up clockwork one on the back of the
front door and that was pretty effective and you were in no doubt that
it's worked as the whole door resonated it in both directions!

Cheers, T i m