Thanks for your response. Sorry, meant external door. It has been working for the year that I've been there and all of a sudden it has stopped working. I've tried the sounder test and it works ok but I'm not able to do the walk test as the alarm won't set as zone 1 light is illuminated and...
Hi, I moved house last year and the alarm which was previously installed in the flat was working well, albeit no manual but i used an online help to check basic function. From what i can tell from the online manual (as it doesn't have a model on the alarm itself) it is a Challenger AP200. All...