For what it's worth,
I have a protector Plus (console PS361) and had the same problem. I plugged a remote chime with same house and unit code as my console in an electrical outlet near the door I usually go out from. When I arm the system it chimes loud enough for me to hear it through the door. You could even put the remote chime outside I guess or, in a shed or garage. It's not a visual solution but, I just thought it might help.