castle caretech

I moved into a house with a Euro mini alarm plus a pyronix v2 tel unit. Never had a problem with it, but we don’t actually use the alarm often. We came home to the internal speaker making a constant alarm and the main alarm panel showing error code 485 loss of Comms please wait. No buttons...

I'm having problems adding a second keypad to a castle euro mini. I've never done it before though I've installed several euros and the similar pyronix PCX systems without trouble. I installed the original system a few years ago without a problem using one RKP. Now I need to add another. I...