4 circuit board connector locations – DoorKing 1820 User Manual
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2.4 Circuit Board Connector Locations
Master Code
Switch
RJ45 Jacks
Use with 1884 (Call Down)
Line Interface Boards
1820 Systems Only
10-Pin Ribbon Connector
Use with 1882 and 1982
(Standard) Relay Boards
1816 Systems only
Terminals 1-10
Decoder Board Connection
1816 Systems only
Main Terminals 11-24
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26
1820-065-B-2-06