on a 9200 ,have been having alarm activate, zone two a couple of times then zone one . have taken fronts off detectors and checked for bugs , done walk test and they perform as per instructions. what further tests can be done ,?
,you will have to test the circuits with test meter,check resistance,check that you have not made any changes in the zone area,check voltage at the detectors,very important,
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home alarm systems.