An NVR splitter allows you to use that one existing cable to connect two cameras or one camera and another network device. This can save you considerable time, effort, and money compared to the labor involved in pulling new wires. On the other hand, IP camera systems use Internet. A PoE splitter connects to an IP camera by receiving power and data through a single Ethernet cable from a PoE switch or injector, then separates the power to match the camera's voltage requirements. This enables seamless, cable-efficient installations—especially in 2026 setups using advanced. If you're looking to expand your NVR security camera system without running a ton of new cables, you should know about NVR security system splitters. When an Ethernet cable carries both data and electrical power (via PoE), a splitter can separate those two outputs. One jack provides standard Ethernet for data, while the other delivers power at the correct voltage. Our macOS CCTV software SecuritySpy allows you to set up an effective video surveillance system of any size, in both home and commercial settings. You can setup firewall rules that determine what traffic between VLANs is allowed and what isn't. I have it where Bonjour traffic from.