​Found this attached to my ceiling joists. Near a bunch of electrical wires. It’s red plastic from what I can tell. It has multiple screw downs but has nothing connected to it. It is about 4-5” big. No clue what it is or was.

Working on redoing some ceiling tiles in my downstairs area. Pulled the old ones down and saw this thing mounting to a floor joist. Did a reverse search on google and came up with nothing. Anyone have a clue what this thing is? Nothing is attached to it wires or anything.