Thanks. Have found fuse (glass line fuse, like you get in car radios) and it is blown as you suggest. All I need to do now is find somewhere that sells them... I assume the colour banding on it tells me what amp is is?
Hopefully that'll solve the problem.
P.S. So the animal immune...
I have a guardtec alarm that was already in the house when we moved in. I think that it is either a 360 or a 580.
Anyway, I was trying to swap over one of the movement detectors for an \\\'animal smart\\\' one that I had bought - so that the cats would stop setting off the alarm.
Well, you...