The membrane switch is composed of six layers: Graphic overlay, upper-adhesive, the upper circuit, the isolation spacer, the lower circuit and the back adhesive. The contact of the upper circuit is downward, and it is in contact with the point of the lower circuit. The circuit contact bounces back after releasing, then the circuit is disconnected and the loop triggers a signal.
The Membrane switch has strict structure, beautiful appearance and good sealing. It has the characteristics of moisture resistance and long service life. It has been widely used in electronic communication, electronic measuring instruments, industrial control, medical equipment, automotive industry, smart toys, household appliances and other more fields.