This is what it appeared to be the case. Went by it this morningFSThunderboltfan1000 wrote: ↑Thu Nov 30, 2023 11:22 pmThe STH-10 by the pizza place was the only one replaced because it no longer worked. I'm pretty sure they only bought a rectifier and Eclipse siren head and that everything else from the old STH-10 was re-used.