Press the film.The switch makes contact with the lower circuit's plate when turned downwards, conducting the circuit. Upon releasing the finger, the upper circuit's contact bounces back, breaking the circuit and triggering a signal. The membrane switch is structurally sound, aesthetically pleasing, and well-sealed. It features moisture resistance and a long service life. It is widely used in electronic communication and electronic measurement applications.InstrumentIndustrial Control, Medical Equipment, IndustrySmart ToysHousehold appliances, and other fields.