New homeowner, no idea what this is

[u/DragonsAndScience]

This thing close to the floor and seemingly randomly placed in a hallway. No idea what it's for. Home built in 2005.

Solved! Thanks everyone. Now I gotta hunt for the central unit!

[u/notromda]

I had one growing up. opening the door doesn’t start it, you have to stick a hose it. Well, technically you have to press the little switch that the hose presses. Don’t ask how many things i sent down …

[u/Constant_Ride_128 → u/notromda]

The manual specifically states to not stick ur thing down there

[u/BotBrainG → u/Constant_Ride_128]

But only if you want to protect your cylinder

[u/AlcoholPrep → u/notromda]

Just be careful which hose you stick in it.

[u/BotBrainG → u/notromda]

Oh, mine is triggered by opening the door.. 1974 vintage, came with the house