DoorKing 1816 Intercom System-Multi - Manual (Page 23)

2.4 Main Circuit Board Terminal Description
Terminal Description
1
2
3
4
5
6
7
8
9
10
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.
12 Doorman / Concierge Telephone
13 Doorman / Concierge Telephone
14 Lobby Panel Entry System or Telephone
15 Lobby Panel Entry System or Telephone
16 Central Office Phone Line (Optional)
17 Central Office Phone Line (Optional)
18 Earth Ground
19 Relay Normally Closed (NC) Contact
20 Relay Normally Open (NO) Contact
21 Relay Common Contact
22 Not Used
23 16 VAC Main Cabinet Power Input
24 Low Voltage Common
1816-065-K-12-11 Page 23