On Friday, 8 May 2015 12:50:41 UTC+1, Jim GM4DHJ ... wrote:
Does anybody know of a cordless transmitter and receiver that doesn't eat
batteries? ......the ones I have had you couldn't keep up with the battery
replacement .....

I have this one.

http://www.amazon.co.uk/Efergy-Wirel.../dp/B0074HN5HW

Brought in around Nov 2014 and haven't yet replaced the batteries in either unit.