Passive PoE- means that input and output voltage are equal.Transforms Non PoE devices to PoE enabled.Supports 12V.Power supply required for power input-simply use the power supply(wall transformer)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.Can work up to30-40 metres/100-130ft(depending on the quality of the cable and the power draw of the device). Injector:RJ45 Male + Power In to RJ45 Female;Splitter:RJ45 Female to RJ45 Male + Power Out;Power Pins:4,5 + and 7,8;Transmission distance:30-40 m/100-130 ft Application:WLAN,routers,switches,internet telephony,security monitoring etc Colour:Black Material:ABS Size:Line length 18cm Package Contents: 1 PCS * PoE injector cable 1 PCS * PoE splitter cable Only 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.