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D-Link DCS-3112 User Manual
Section 5 - DI/DO
12V+/12V-
Connect to an IR illuminator or other device in parallel connection.
The total output current should be under 200mA.
DI
Receive signals from a motion detector or any other external
security device.
DO
Connect to an alarm or buzzer. Refer to page 57.
485+/485-
Connect to the RS-485 interface for controlling auxiliary equipment
such as an external camera enclosure to perform PAN and TILT
movement. Refer to page 57 for more information.