On 04/10/2012 12:14, larkim wrote:
Just curious, why do most wired doorbells need a transformer, with
the associated hassle of wiring from a mains source to the tranformer
and then to the bell, when they could just as easily use a 9V battery
in the sounder unit instead?

I presume there's a good reason, just I'm too much of a numpty to
work it out for myself.

So you can power an illuminated bell push...

I know there are some battery only devices, but they are all horrible
and don't meet SWMBO's audio requirements nor visual aesthetic
requirements. And wiring something up doesn't meet my requirements.
(And wireless ones are either crap, don't work in my house, look ugly
or don't make the right sort of ring for SWMBO!).

How about the mains wireless devices - the sounder plugs into a socket,
and you can invite TMH round the screw the push to the front door!


--
Cheers,

John.

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