Avtech AVH304 Manual De Instrucciones página 8

8) Video Input (w/PoE)
(for selected models only)
They are used to connect IP cameras locally. This device supports PoE (power-over-ethernet), which could
provide power to all connected cameras. No power adapters are needed for cameras.
9) EXTERNAL I/O
(for selected models only)
Insert the supplied external I/O block, and users are able to connect external devices.
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HARDWARE OVERVIEW