In Reolink, we provide two types NVR systems, they’re PoE system and WiFi system. You may wonder what is POE and WiFi system, what's the difference?
- What's PoE?
PoE stands for Power over Ethernet. Transmitting both data and power supply over single Ethernet cable (Cat5/Cat6) is the main feature of PoE technology. As long as your IP camera supports PoE, you just need to connect it to a PoE NVR or PoE switch, then it works. PoE technology enables IP cameras to support plug-and-play installation, which greatly reduced the installation procedures, and eliminates the necessity of power cable and supply.
- What's WiFi?
WiFi is a kind of wireless technology that allows network devices to transmit data through wireless signal (2.4GHz UHF band, 5GHz SHF band). Obviously, once the IP camera supports WiFi, the camera can connect your router without using the hardwired connection. WiFi can enable IP camera to become portable, this is the advantage of WiFi. But there is a drawback on WiFi camera system, your WiFi camera still requires power cable connection.