OK. Press the filmThe switch contact deforms downward, making contact with the lower circuit's plate and completing the circuit. When the finger is released, the upper circuit contact bounces back, breaking the circuit and triggering a signal. The membrane switch features a precise structure, attractive appearance, and good sealing. It is moisture-resistant and has a long service life. Widely used in electronic communication and measurement.InstrumentIndustrial Control, Medical Equipment, Automotive IndustrySmart ToysHousehold appliances, and other fields.