Membrane Switch with Hole 

ELECTRICAL MEMBRANE SWITCH CUSTOMIZATION   When the membrane key switch is made into a "switch", the connecting wires of the function keys are connected together in advance. Unlike discrete switching elements, the pins of each switch need to be connected with solder wire. Therefore, the membrane switch circuit can avoid welding errors, save welding time, and facilitate assembly and connection.   Membrane switch is an operating system that integrates key functions, indicating elements and instrument panels. It consists of four parts: panel, upper circuit, isolation layer and lower circuit. When the membrane switch is pressed, the contacts of the upper circuit are deformed downward, and are in contact with the pole plate of the lower circuit. After the finger is released, the contacts of the upper circuit bounce back, the circuit is disconnected, and the circuit triggers a signal.The membrane switch has strict structure, beautiful appearance and good sealing perf…