I'm assuming since there's at least one Whelen in ETown, their other newer sirens are probably also Whelens.
We go through ETown and several of the other towns in Harden County every time we go to Pine Knob, but we've never gone siren hunting there. I'll have to call down there and find out when they test. From what I understand from that news report I mensioned earlier, ETown's system is separate from the rest of Harden County.