Mark A wrote:
Derek ^ wrote:

What's an underload??

I think he meant under load. In other words the voltage when being used,
as opposed to the voltage produced when not connected to anything.

Have to say that we tried first a cheap wireless doorbell from B&Q in
my GF's place and it maybe worked half the time.

That's the problem we had with them. Very erratic performance. And
that was out of the box, with new batteries etc. I wouldn't bother
again. Wireless, schmireless!

We've currently got a fantastic 8" Swiss cow bell on it's original
thick leather strap which I'd like to use as a doorbell.

Can't quite decide the best way to ring it though. It has a clapper in
it so a simple swing would do it or something attached to the clapper
maybe.

I'm erring on the side of mechanical wires and pulleys and a handle
outside rather than a complicated electric relay type solution

--
Steve F