"Ziggy" wrote in message
...
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.

{Here are some sample products from Argos http://tinyurl.com/2sb3r9}

I'd say alkaline batteries could be reasonably expected to last 6 months to
a year, with limited use. It might vary quite a bit product to product
though.