Home appliance display products are widely used in electrical products that need to input simple instructions. Enter simple commands with finger presses or even gestures. The internal processor recognizes the signal value according to the height, and then issues functional instructions to the electrical device through the processor to achieve the operation that the user wants to perform, and gathers the operating lights to issue instructions. In this way, we can realize the intelligence of electrical appliances, simplify the operation of electrical appliances, and improve the sense of use experience.