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Pin Definition of Alarm I/O & RS-485
4ch-Model / 8ch-Model:
16ch-Model:
Pin
Definition
RS485 D+
1
RS485 D−
2
Ground
3
Normal Close A
4
Common Node A
5
Normal Open A
6
Ground
7
Normal Close B
8
Pin Definition of Audio In / Audio Out
For terminal blocks of Audio In and Audio Out, shown as below pictures, pins on the upper row are
Audio In / Audio Out connectors for all channels, in sequential order from left to right. All other pins
on the bottom row are for ground connection.
4ch-Model:
8ch-Model:
16ch-Model:
Pin
Definition
RS485 D+
1
RS485 D−
2
Ground
3
Normal Close A
4
Common Node A
5
Normal Open A
6
Ground
7
Pin
Definition
Common Node B
9
Normal Open B
10
Ground
11
Normal Close C
12
Common Node C
13
Normal Open C
14
Ground
15
Ground
16
Pin
Definition
Normal Close B
8
Common Node B
9
Normal Open B
10
Alarm In 1
11
Alarm In 2
12
Alarm In 3
13
Alarm In 4
14
Pin
Definition
Alarm In 1
17
Alarm In 2
18
Alarm In 3
19
Alarm In 4
20
Alarm In 5
21
Alarm In 6
22
Alarm In 7
23
Alarm In 8
24
Pin
Definition
15 Alarm In 5 (8ch model)
16 Alarm In 6 (8ch model)
17 Alarm In 7 (8ch model)
18 Alarm In 8 (8ch model)
19 N/A
20 N/A
Pin
Definition
Alarm In 9
25
Alarm In 10
26
Alarm In 11
27
Alarm In 12
28
Alarm In 13
29
Alarm In 14
30
Alarm In 15
31
Alarm In 16
32
3
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