It looks like a wireless model but not a Ant+ version. You can use them with the wireless Joule head but not with Ant+ compatible head units.
I believe Ant+ units are called SL+.
Looks like the older 12mm axle generation.
"Comp" was wired with a steel axle and freehub body
"SL" was wired with an aluminum axle and freehub body
"2.4" was wireless but not ANT+
"2.4+" was the 2.4 with the ANT+ firmware update
"SL+" was ANT+ out of the box
"SLC+" was the SL+ with ceramic bearings
Trouble is that the battery covers are interchangeable and may not be original.
A wired hub will not talk to a wireless head unit, even through the wiring harness.
A wireless hub will only talk to a "like" wireless headunit. (ANT<>ANT, ANT+<>ANT+).
Well I did what I should have done earlier and called CycleOps. It turns out the hub is exactly what it appears, a Powertap SL wired. I don't have much use for it now since I need something that connects to my Garmin but I'll see about trading it/returning it. Thanks all.