Film switches are an all-in-one operating system integrating key functions, indicator elements, and instrument panels. Composed of four parts: panel, upper circuit, isolation layer, and lower circuit. When the film switch is pressed, the upper circuit's contacts deform downward and touch the lower circuit's plates, completing the circuit. Upon releasing the finger, the upper circuit contacts spring back, breaking the circuit and triggering a signal. The film switch is structurally sound, aesthetically pleasing, and has good sealing properties. It features a long service life and is widely used in electronic communication, electronic measurement instruments, industrial control, automotive industry, smart toys, household appliances, and other industries.