Doorking 1820 Manuel d'utilisateur télécharger pdf (Page 27)

2.5 Main Circuit Board Terminal Description

Terminal Description

Decoder Board Connection. Decoder boards are required with 1816 systems that use more than 5 relay

boards.

11 Postal Switch – A switch closure across terminals 11 and 24 will cause the relay on the 1885 board to

activate for its programmed strike time.

Doorman / Concierge Telephone

Lobby Panel Entry System or Telephone

Central Office Phone Line (Optional)

Earth Ground

Relay Normally Closed (NC) Contact

Relay Normally Open (NO) Contact

Relay Common Contact

Not Used

16 VAC Main Cabinet Power Input

Low Voltage Common

1820-065-B-2-06 Page 27

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Doorking 1820 Manuel d'utilisateur Page 27