With the popularization of household appliances and the introduction of various print and video equipment into ordinary families, our company has developed small and medium-sized products suitable for washing machines, refrigerators, range hoods, printers, etc. This type of product is widely used in electrical products that need to input simple instructions. Input simple instructions through finger pressing or even gesture waving. The internal processor recognizes the signal value according to the height, and then gives functional instructions to electrical equipment through the processor to achieve the operation that users want to perform, and gathers operation lights to give instructions. In this way, we can realize the intellectualization of electrical appliances, simplify the operation of household appliances, and improve the use experience.