The Doorbell That Knocks

It is beautifully made. A brass hand, closed into a loose fist, on a hinged arm behind your front door, wired to an ordinary bell push on the porch. A visitor presses the button. Nothing rings. Instead the little fist swings up and knocks three times on the inside of your own door, at exactly the volume a real person would use.

Nobody asked for it, because the doorbell was invented to replace precisely this. The bell exists so that a caller need not stand there hitting your house with their hand. The device therefore takes a solved problem, solves it backwards, and charges you eighty pounds for the privilege.

And yet there is something in it. A bell announces that a machine has noticed you. A knock announces a person, standing close, taking the trouble. The fist knows this, and knocks with a hesitancy no bell can manage — three taps, a pause, and sometimes a fourth if the visitor holds the button, which is precisely what a nervous caller does.

Owners report that the effect wears off after a fortnight, at which point the sound stops meaning somebody is here and starts meaning the thing is doing it again. The manufacturer suggests, in small print, that it be installed on a door nobody uses, where its qualities can be appreciated undisturbed.