Passive PoE Injector and Splitter kit with 3.5 mm x 1.35 mm DC Connectors
Passive Power-over-Ethernet (PoE) allows low cost of delivery of power over the network cable.  This scheme allows power to be carried on 10/100 networks over the spare, unused pairs of a CAT5, CAT5E, or CAT6 Ethernet network cable.  Depending on distance (see http://wifiqos.com/poe-calc.html ) the power source could be the power supply that came with the wireless access point, IP video surveillance camera, etc. This set contains a very cost effective injector and breakout or splitter component. The injector inserts the DC voltage at the source location into the 3.5mm x 1.35mm injector plug. The DC voltage is then carried over the spare pairs of the 10BASE-T or 100BASE-T network cable. The breakout or splitter extracts the DC voltage from the network cable onto the 3.5mm x 1.35mm splitter jack. Also available is a 2.1mm version WS-POE-IONote: if you use this with a 5 volt device - keep in mind that with a 5 watt device, the ethernet cable will lose up to .4 volts every 10 feet - so the distance is limited.  We have a calculator on our web page to figure this for you.Please see our 5 volt active splitters for flawless operation up to 328 feet at http://wifiqos.com/foscam.phpAnother method is to use a 6v power supply - this will extend the useful range to about 35 feet - but will cause the voltage at the camera to vary far outside of the stated specs.