Audio / Alarm I/O & Rs-485 Connection - GeoVision GV-IP Speed Dome Quick Start Manual

3.2 Audio / Alarm I/O & RS-485 Connection
Pin definition for I/O and RS-485 connection is as below:
Pin Definition
1 Audio Out
GND
2
(Audio I/O)
3
Alarm Out A1
4
Alarm Out A2
Pin Definition
Alarm Out B1
5
6 Alarm Out B2
7 RS-485 D+
8 RS-485 D-
Connecting the Camera
3
Pin Definition Pin
Alarm In 4
9 13
10 Alarm In 3 14
11 Alarm In 2 Def
12 Alarm In 1
Dn
9
Definition
GND (Alarm
I/O & RS-485)
Audio In
Definition