"PC Paul" wrote in message
o.uk...
"JB" wrote in message
oups.com...
Are there any suppliers of such devices?


http://www.12voltz.co.uk/specialist.htm


Aaargh!

After 2 duff £100+ links, how about this for £49.95?

http://www.henrys.co.uk/cctv/ars.htm

Still seems an awful lot though.