Home Security Systems
Home Security System Repair Questions? Ask a Technician.
Hi, I'm Pete. Welcome to JustAnswer! I'm reviewing your question now, and will post back with your reply ASAP.
Hi, still waiting on the model number - did your wife find it yet?
Is it a DE5450U control panel?
If so, see page 11 of the following user guide on how to troubleshoot the trouble: