Avigilon 1.0-H3-DC2 Guide D'installation page 18

Connecting to External Devices
External devices are connected to the camera through the I/O
terminal. The pinout for the I/O terminal is shown in the following table
and diagram.
Table:External I/O Terminals
Pin Function
1 Ground
2 Input
3 Output
Figure: External I/O terminal schematics and example application.
10
Ground
To activate, connect the Input to the Ground
pin. To deactivate, leave disconnected or apply
between 3-15 V.
When active, Output is internally connected
with the Ground pin. Circuit is open when
inactive. Maximum load is 25 VDC, 120 mA.
Relay
Switch
Description