The core part of waterproof membrane switch is the same as the normal membrane switch, which is the conductive circuit on it. When you press the button, the circuit is turned on, thereby conducting electricity to complete the whole function.
What about the waterproofness? It's due to the waterproof materials and sealed structures. Waterproof materials have good sealing properties. They can effectively prevent the intrusion of moisture, mist or liquid. At the same time, the sealed structure also ensures that the circuit inside will not be eroded or damaged in the external environment.
