Three PoE Power Solutions for IP Cameras: PoE NVR & PoE Switch & PoE Injector
The POE (Power over Ethernet) can transmit both power and data to an edge IP camera with a single Ethernet cable. You can use PoE injector which will add power to the Ethernet cable to supply the power. The router or switch will be required when the PoE injector is deployed. The PoE injector only injector power, it will not process the data. That is why the router or switch is required. The second method is the PoE Switch which has integrated both the power injector and the switch into single devices. If the PoE NVR is being used, there is no need for PoE Switch. However, all the cables need to run back to the PoE NVR which will compromise the flexibility.
Unmanaged PoE Switch:
https://www.fastcabling.com/product-c...