I purchased a home last year that had a DSC PC 1555 security system installed in it. The problem was that the owner did not know that the code was to arm it. I was able to get a copy of the 1555 installation manual, from which I learned how to default the system and get back to the default codes. I reprogramed the zone definitions and attributes and all went fine except for one zone. My front door is the only zone that uses a wireless transmitter (WLS-907 U 900MHz Slim-line). After reactivating the system I was getting trouble condition 5 (zone fault) and 7 (low device battery) associated with the wireless zone. Also, the zone always said that it was open. The cover on the wireless transmitter had been damaged and would not close properly. As a result the device was full of dust, etc. I reasoned that the zone fault may be due to the fact that the cover would not close properly or that the device may not work at all. I purchased a new, identical, transmitter off of e-bay. After I installed the new unit with new batteries, I was still getting the same errors, and the zone remained to think the door was open. Would somebody please help me understand what is going on :confused: Do I need to do any special programming since I installed a new wireless device so that the control panel will recognize it?? Thanks

I'm having a new front door installed. Currently i have ADT alarm with magnetic(?) sensor on door. I need to take it off the door to attach it to the new one when it comes in. Will this set off my alarm - It costs a fortune to get an engineer round to fix it! Are the wires sensitive enough to "know" if they're being moved? Probably a daft question - can anyone help?