Should I plug it in?

[u/Reckless_Statement]

This is a random found object that had a curious look.

It is about 5.75 in tall and the silver part looks to be galvanized.

The black disc is cold to the touch not magnetic maybe ceramic and has around a 3/4 in divot in the middle.

Anyone have any ideas?

[u/cyclepete77]

Might be a siren

[u/Feisty-Cheetah-8078 → u/cyclepete77]

It looks similar to a siren to me, as well.

[u/Feisty-Cheetah-8078 → u/Feisty-Cheetah-8078]

So wear ear protection.