How to hardwire more than one hardwire alarm contact???

Question

I have an ademco alarm and are hooking up doors and windows on teh same zone. I need to know why it doesn't read when i open the door or window. They are closed Contacts, and when I open a door or window when they are all hooked up it doesn't register. But when they are alll hooked up nothing registers. Where do I put the resistors and such...

Answer 1

Does the system detect an alarm when both the door and window are open? If so you have the sensors wired in parallel instead of series.

Have a look at the Ademco and First Alert installation manuals on my web site. It should show you how to properly wire the sensors in series.
http://members.rennlist.org/warren/security.html

Answer 2

you probably have them hooked up in parallel not series.the way they should be running is one wire in one wire such as you have a black wire and a white you want them to go like this, white to black to white to black when you open the door it breaks the circuit you probably have all the whites together and all the black.hope that helps