For those considering long Ethernet runs between a PoE injector or switch and the Ubiquiti node, here is another option worth considering. On long runs, it is more efficient to power at a higher voltage, so you can use a Switch such as the Netgear GS108PEv3 or the Toughswitch TS-9-Pro at 48V. The key to success is to use a Ubiquiti Instant 802.3AF outdoor 48V PoE adapter at the node end of the cable. I recently tried this adapter with both types of switches and it works well. The Netgear switch is auto-sensing (true 802.3af) and the Toughswitch is passive PoE (not auto-sensing).