How to interpret the 'Check Device' display on a D1255 or D1260 keypad.
Why does the keypad display "Check Device"?
How to locate which point generated the 'Check Device' display and modify programming to prevent the display.
How to correct the D8112/5505 not sending a Reboot report.
The 8112/5505 panel is communicating alarm and trouble signals but after resetting the panel it does not report the reboot.