EZ-OPSP122W is a waterproof PoE splitter to power non-PoE enabled devices.
It accepts 802.3af 48v PoE input via the 10/100 RJ45 Jack to output fixed 12v/1A via the DC Jack (5.5 x 2.1mm).
This way a non PoE enabled device can be powered remotely via any PoE Injector or PoE Switch