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AXIS 221 - The I/O Units Connectors
The I/O Units Connectors

I/O Terminal Connector

Pinout and Interface
The 10-pin I/O terminal connector provides the interface to a solid state relay output, two
digital photo-coupled inputs, RS-485, GND and auxiliary power.
The terminal connector is used in applications for e.g. motion detection, event triggering,
time lapse recording, alarm notification via email, image storage to FTP locations, etc.
•Input - used for connecting external alarm devices and triggering images for spe-
cific alarm-based events. The input is typically connected to a motion detector or
any other external security device, and images can be uploaded whenever the
detector is activated. Maximum 18V DC is allowed on the input.
•Output - can drive a maximum load of 50V DC at 100mA directly or heavier
loads by connecting additional relay circuitry. If the output is used with an exter-
nal relay, a diode must be connected in parallel with the load for protection
against any voltage transients.
Caution!
Connecting AC to the inputs/outputs will damage the unit.
terminal
10-pin I/O
connector
12345678910
connector
Power
block
connector
Power adaptor
connector (D-sub)
RS-232
RS-485
connector