Rob
this guy is on Ebay all the time. This is a link to his auctions
http://cgi.ebay.com/Auto-door-opener-for-chicken-poultry-house_W0QQitemZ260076111607QQihZ016QQcategoryZ46532QQcmdZViewItem
Go to his ebay store or his web site www.chicken-house.co.uk
Mudhen, I purchased the auto coop door from the guy in England and I very happy with it. It runs on batteries so no elecrtical compatability issue. I have had mine on the coop for a year and a half and the batteries are still working. you can set the time to open in the morning and close up shop...