When thinking about the interaction mode of the switch, I thought of the embarrassing experience of using the infrared sensor faucets in public places before. Because the location of the infrared sensors in each place is different, and some shopping malls need a certain time for the faucets to come out of the water, I often wonder whether the faucet is broken or I put it in the wrong place. The original design of this faucet is to have a falling feedback before it comes out. After removing the infrared sensor, the style can also be used as a household model, with the faucet itself as the switch