51400756-100 is the original 'ABCDE' membrane section of the keyboard used in Honeywell's Universal Station. The membrane portion of the keyboard is
RFKB - Relegendable Function Key Panel - with alarmable function keys. The 51400756-100 module is a membrane key panel consisting of 79 user-relegendable membrane function keys, plus 1 membrane key which is used for an LED test function. Western Process Computers uses NEW manufactured membranes for this application.

To make a complete keyboard assembly, it must be combined with one of the following keyboard interface boards:

51400771-100 earliest I/F, requires external power supply

51400972-100 low power ABCDE only

51401570-100 low power ABCDE or QWERTY

51401952-100 current interface for 'Z' furniture

51401952-200 current interface for classic furniture