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3.1.3 Digital I/O Connections
The terminal block of the camera also provides Digital Input and Digital Output. You can
connect the wires of connector to this terminal block to output these signals. The I/O
connector provides the interface to:
1 set of Digital Input (D_IN + GND) – The digital inputs for connecting devices that
can toggle between an open and closed circuit, such as PIRs, door/window
contacts, glass break detectors, etc. When a signal is received the status changes
and the input becomes active.
1 set of Digital Output (D_OUT + COM) – The output to Relay Box or Relay Board,
and switch on the alarm device such as LEDs, Sirens, etc.
Digital Input (Alarm Input)
Digital Output
Door/Window
Contacts
Relay Board
or
Relay Box
