Correct, Ubiquitit does not use Active PoE (802.3at/802.3af) it uses Passive PoE (a common industry practice) as noted in the datasheet which is simply sending voltage up the spare pairs that are not used for data and essentially turns the cable into a long extension cord + data pair
This mostly has advantages on manufacturing side where it would cost a couple bucks for the PoE chip on the receive side and again on the power sending side. This also has the benefit for ham operations in that we can run it straight off a power source without the need for additional integrated circuits in the path.
The voltage range has been discussed in the past so i wont go into to much depth other than to say its around 10.5-24v AT THE DEVICE this means it can be run from 12v battery (short cable run), 18v battery (longer runs) directly. Can run from a car source, etc.