"A grey device with a cord on it.. I thought it was a game camera of some sort but I don’t think it is. Found at a park"
A: "Trail cameras are not always for hunters. they use them to check wildlife numbers and interactions too. It’s most certainly a cam"
To remove the scale that's already there, just soak the faucets in simple lemon juice, available at any grocery store. Cheap, no harsh chemicals. Wipe away scale after 30 minutes.
https://earth.google.com/web/@-54.66239115,-36.19531314,957.24274773a,559.044623
66d,35y,0.11594552h,0t,0r
The beacon says "UFO crash"