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 point and user numbers reporting in a non-standard format, example; points 1-9 reporting as 101-109 or users 006-013 reporting as 601-608.