How do I change the code on a XR 20 security syestem when I do not have the?
I bought a house and I do not have the security code on a XR 20. The alarm went off and now I have the power shut down, how do I change the code and restart ?
Looks like a rebadged Ademco to me.
However you can Google XR20 and find the manual.
But you will need a installer manual to do what you require. Its old as the hills now, time to move on get a new one installed.
