I was in Hot Springs SD in August, and we were on our way to a set of three sirens behind what looked like an abandoned school and we stumbled upon a Model 5 on the Battle Mountain Sanitarium that isn’t marked on the map. Unknown if it’s active or what it was used for. Then we went to the set of three on a hill. a 2001-130, a 3T22 and what the map said was a Darley Champion. It was behind this creepy old school called Sandstone School. Now used as museum. The Darley champion was the first thing that confused me. It looked very odd, and unusually tall. And both the 3T22 and maybe Darley had their power shut off set to on still, but they were both phone relay activated and they had modern boxes. But the map says the maybe Darley is inactive and the 3T22 and 2001 are active
Overall this town was pretty mysterious and sorta spooky at night.
I did take quite a few photos of the sirens if anyone wants more angles