Lately, I’ve been wondering why later 7002’s have vandal-resistant grilles, and some earlier 7002T’s (such as the one in U8oL0’s collection) don’t.
It just clicked. The “T” has nothing to do with the grille. It stands for “terminal”. That’s why the WST-24 has screw terminals, whereas the WS-24 has wire leads.
The 7002T must have been introduced right before Wheelock changed their grilles, while they continued to manufacture horn/strobes with wire leads for some time after that.
So, a “7002t” with leads would actually be a 7002. Makes sense, I guess.
Yep, and a 7002 with screw terminals is a 7002T. So that “ADT 3408-024”, also in U8oL0’s collection, is a very early 7002T.
Actually, the 7002T was introduced the same time as the 7002. And yes, the “T” means it has terminals instead of wire leads. It’s just that the 7002s were more common at the time, but were discontinued shortly after Wheelock redesigned the grille in 1985 (probably due to the 7002Ts being easier to install), which is why you see more 7002s with an open grille and more 7002Ts with a closed grille.