E Z Peaces wrote:
I've tried battery-powered wireless door chimes. I used AA alkalines,
which have a much longer shelf life than conventional carbon-zinc. The
problem was the current draw of the receivers. A set of batteries would
last only a few months, and a lot of visitors might leave frustrated
before I realized my chime was out of service.

Why use battery-powered chimes (as opposed to transmitters)? My
wireless chimes plug into outlets (upstairs and downstairs chimes).
Being as they make noise, it's not like precise location is critical.
The transmitters use a "N" battery every 3-4 years. You do have to
check occasionally to make sure it's still working.

The operating cost (75 cents per year for batteries, and whatever the
line draw is) is probably more than a transformer-operated bell but
we're way down in the noise range of expense.

Dave