Ok so expander as I said not extender repeater thing , maybe it's just wording we both using but same thing
Will this work with the panel you have or want
As mrH says is what I would probably do, or somewhere within range
To start with
Swap one keypad with one of the others without changing the address, do it pulling off the plug rather than undoing the wiring
Did the fault move with the keypad? Or does it start working?
Maybe give more detail and pictures , and what do you mean new from Honeywell?
Are you connected to line 1? , as above keypad address although default it should have worked
If you unregistered all the devices you must have got into installer mode
Why not try factory codes now?
This forum doesn't allow giving out of default methods and codes and so on
Something i even tell app users , if you disarm in error rearm otherwise don't disarm just cos you get a call or notification,
Maybe he means remotely that's what he thinks happens ? Or does the panel have a key switch input? Which triggers via dialler ?