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DCS-6620G User’s Manual
D-Link Systems, Inc.
External I/O Port
External I/O Port
1 DI+ INPUT (Max. 50mA, 12VDC)
2 DI- INPUT (Initial state of DI is low)
3 SW_COMMON OUTPUT (open from SW_OPEN at initial state)
(close with SW_OPEN when set DO to ON)
4 SW_NOPEN OUTPUT (Max. 1A, 24VDC or 0.5A, 125VAC)
The digital input is used for connecting external alarm devices and once triggered images will
be taken and e-mailed.
I/O Terminal Block:
External I/O Port
External I/O Port Definition for the 802.11g PTZ Internet Camera
The DCS-6620G provides a general I/O terminal block with one digital input and one relay switch
for device control. Pin 1 and pin 2 can be connected to an external sensor and the state of
voltage will be monitored from the initial state ‘LOW’. The relay switch of pin 3 and pin 4 can
be used to turn on or off the external device.
The I/O connector provides the physical interface for digital output (DO) and digital input (DI)
that is used for connecting a diversity of external alarm devices to the 802.11g PTZ Internet
Camera such as IR-Sensors and alarm relays.