On Sat, 20 Jan 2007 13:37:22 +0000 (GMT), "Dave Plowman
(News)" wrote:

In article ,
Ziggy wrote:
What is the approximate battery life of the receiver of a wire free door
chime?

For the sake of argument, let's say the unit is used very little and the
receiver does not have a light.

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Not having such a device, why would the *receiver* be battery powered
unless you live somewhere without mains electricity?

Merely because that's how they design some of them.
I happen to have one for a side entrance, though I forget
the model. Don't recall much about it actually, but I think
the receiver takes 2 x C cells and hasn't needed them
replaced since it was installed a year ago.

As for the specific product OP is considering either the
manufacturer can provide this data or it'll have to be
measured in use (current consumption as a rough calculation
applied to the expected capacity and shelf life of the type
of battery used).