Siqura MSD622, Installation Manual, Page: 18 / 40

Siqura MSD622
Page 14
4.6.4 22-pin connector definition
With the 22-pin connector, installers can simply connect the power and video cables to the dome
at the same time. The alarm pins are serviceable for connecting alarm input and output devices,
such as alarm sensors, sirens, or flashing lights with the surveillance system. For the definition
of each pin, please refer to the table below.
22-pin connector
The definitions of each pin are listed in the following table.
Pin Definition Cable Color Rating
1 AC 24-1/DC (+) 20/18 AWG Red
2 Alarm, normally closed White Photo Relay output 300V
3 AC 24-2/DC (-) 20/18 AWG Black
4 Alarm, normally open White/black Photo Relay output 300V
5 FG 20/18 AWG Yellow
6 Alarm COM
24 AWG
Green/black Photo Relay output 300V
7 Audio in Yellow/black
8 Audio out Orange/black
9 Audio GND Green/black
10 Audio GND Brown/black
11 ISOG Blue/white
12 Alarm 1 Red/white
Input 5V 10KO pull up
Photo Relay output 300V
13 Alarm 3 Purple
14 Alarm 2 Gray
15 Alarm 4 Blue
16 Alarm 5 White/black
17 Alarm 6 Orange/black
18 Alarm 7 Purple/white
19 Alarm 8 Gray/black
20 Alarm GND Brown/white Input 5V 10KO pull up
21 Video GND
20 AWG
Black/gray
22 Video Red/gray