Yep, that's the one. Picture is pretty good from just playing around with it so far. The IR is fairly bright, 120ft is, of course, pushing it.
I've tried twisting and pulling too, it'll come apart a few millimeters in the middle where it's usually held together by 4 recessed screws around the perimeter, but then binds on those focus rings. The front cover unscrews, the IR board comes off, but then the only thing visible is a couple of very deep screws holding a circuit board on, and there's no way I could reach all of them even if I wanted to.
Hrrrm.