This video shows us how to supply efficient power to multiple PoE IP camera far away from the PoE NVR. A PoE NVR already provides power and data, but if we transmit long distance and transmit to multiple devices, the power budget of the PoE NVR might not be enough. In this case we can add a PoE injector. When the original signal transmits from the PoE NVR, our injector will receive the data, and use its own power to transmit a new PoE signal.

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