It's the Juicero of whatever market this is.
I work from home and this would be cool to communicate with my kids when I'm on a call before they barge in asking questions. HOWEVER, the price is WAY too high. This is at most a $50 dollar thing.
Don't you already have a door? With a lock? A mute button? OK, maybe those aren't cool, but don't you have a piece of paper, pens, markers and some time to design your own DND signs with your kids? $50 still seems like a lot. We don't have to buy something to deal with every little inconvenience in our lives when what we have on hand + maybe a tiny bit of creativity can probably suffice.