- Official Post
It would check for fire in a radius below it (cone if possible, but it can be a "squary" solid for the sake of convenience). It may detect fires below the floor, but it can only extinguish fires that has a way to reach the smoke alarm.
Water would be pumped in a small resevoir, stimulating the use of "pipes", making a water piping a need. Cells could be used , but that wouldn't be efficient nor as cool looking as the piped one.