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 Female Splitter: RJ45 Female to RJ45 Male + Power Out Supports: 5V, 12V, 24V, 48V Power Pins: 4.5+ and 7.8 Length: 16cm / 6.9in Transmission distance: 30-40m / 100-130ft Application: WLAN, routers, switches, internet telephony, security monitoring etc Colour: Black Material: plastic Size: 16x1.9x1.8cm Package Contents: 25 * PoE injector cable 25 * PoE splitter cable 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.