Passive PoE means that input and output voltage are equal.Transforms Non PoE devices to PoESupports 5V, 12V, 24V, 48V.Power supply required for power input - just use the power supply (wall transformer) that is provided for the device you are trying to power.PoE injector and splitter kit with 5.5 x 2.1mm DC jack / plug.Use with IP security camera, wireless access point and other devices.Can work up to30-40 meters / 100-130ft (depending on the quality of the cable and the pulling power of the device).Specifications:Injector: RJ45 Male + Power In to RJ45 FemaleSplitter: RJ45 Female to RJ45 Male + Power OutSupports: 5V, 12V, 24V, 48VPower Pins:4.5+ and 7.8 Length: 16cm / 6.9inTransmission distance: 30-40m / 100-130ftApplication: WLAN, routers, switches, internet telephony, security monitoring etcColour:BlackMaterial:plasticSize:16x1.9x1.8cmPackage Contents:10 x PoE injector cable10 x PoE splitter cableOnly the above package content, other products are not included.Note: Light 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.