Membrane Switch - is made of several layers including soft insulating material and electric material, with free lock and touch feature. It gives absolute reliability, even in the most hostile operating environments.
A basic membrane switch is composed of multiple layers:
1. An optional Graphic Overlay layer
2. An optional ESD shielding layer
3. A film containing a conductive contact (circuit)
4. A spacer layer
5. A flexible static layer and adhesive