Fully supports IEEE802.3af Input Voltage Range 37V to 57V Support PoE applications in both of Fast / Gigabit Ethernet environments. Short Circuit Protection Over-temperature Protection Programmable Classification (Default:Class 0) High Efficiency Isolation level 1.5KVrms. Easy Installation and Low Cost (Isolation Type, Minimum External Devices required) Low Output Ripple and Noise 1500Vrms Isolation (Input-Output) Colour:black Material:PCB Size:65 x 56mm Package Contents: 1 * module 4 * steel column 8 * screw Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.