What is membrane keypad?

A membrane keypad is a type of keypad used in electronic devices, typically consisting of a thin, flexible layer of material (often polyester or polycarbonate) with printed circuits and symbols on one side, and a flat surface on the other side. The keypad operates using a contact system, where pressing a button on the membrane causes the circuit underneath to complete the electrical connection and send a signal to the device.

Membrane keypads are lightweight and durable, making them popular in a variety of applications such as remote controls, calculators, medical instruments, and industrial controls. They are also often used as an alternative to mechanical keypads or switches because they are less prone to wear and tear and have a lower cost of production.

Membrane keypads can be customized with specific colors, graphics, and labeling to match the overall design of the device they are used in. They can also incorporate additional features such as backlighting, tactile feedback, and waterproofing.