It is suitable for wireless routers, network monitoring, access control systems, switches, and so on. It's safe. Because the PoE power supply terminal will only supply power to the equipment that needs to be supplied. Only connected to the equipment that needs power supply, the Ethernet cable will have voltage, thus eliminating the risk of leakage on the line. It is easy to manage network devices. 4. It is suitable for wireless routers, network monitoring, access control systems, switches, and so on. Package Includes : 2 * PoE injector cable 2 * PoE splitter cable Each cable has a female RJ45 on one side which is adapted to a male RJ45 and 5.5X2.1Mm barrel jack connector on the other side that is provided with the device you are trying to power. PoE injector and splitter kit with 5.5 * 2.1 mm DC jack / plug. Use with IP security camera, wireless access point and other devices Use with IP security camera, wireless access point and other devices