The BT-CAT5-P4J Quad port passive Power-over-Ethernet (PoE) Midspan/Injector from L-com provides a low cost solution for adding PoE capability to existing network switches. The unit is ideal for supplying power for up to four Network Appliances like Wireless Access Points and Bridges, Wired Switches and Cameras and IP Telephones with PoE capability.The BT-CAT5-P4J features integral surge protection for the data lines and power feeds. The unit eliminates the need for an external surge protector. The unit provides protection for both common and differential mode surges. The design utilizes Thyristor diode technology which has superior power handling capability compared to TVS or Avalanche diode based designs. The BT-CAT5-P4J can also be used as a standalone lightning surge protector.This kit includes the midspan/injector and a 48VDC @ 48W power supply (PS4848-25R).This unit is also available individually or in the following kits:Injector only - BT-CAT5-P4J With 48VDC @ 70 Watt Power Supply - BT-CAT5-P4J-4870 With 56VDC @ 117.6 Watt Power Supply - BT-CAT5-P4J-56118For more information and complete specifications, click the data sheet link below.