Review on 💡 Passive PoE Injector and Splitter Kit (5 Pairs) with 5.5x2.1 mm DC Connector RJ45 for Power Over Ethernet by Johnny Grant

The product works great with shorter PoE cables, but it just can't carry as much power over 100 feet. .update: you can definitely use it, just make sure you use a good power source. I needed 12 volts at 2 amps for 8 cameras; about 24 watts each. I bought a 360 watt 12 volt 30 amp power supply and only connected 2.1 x 5.5 wires to it. These adapters work well, even with the extra juice (required because 100ft is too big)