On Sun, 07 Nov 2004 14:39:32 GMT, "John" wrote:

What is the battery life like on wireless door bells. The battery in the
button unit is a small (10p sized ) cell.

For the button cells about 12 months. The bell itself doesn't
contribute much to their demise - its more self discharge because of
condensation and atmospheric dirt across the very fine layer of
insulation between the two ends of the cell.

--
Peter Parry.
http://www.wpp.ltd.uk/