Some small SMD components such as LEDs or resistances can be integrated in the membrane switch.
Overlay material: polyester(recommend) or polycarbonate
Oversize: <800x400mm
Colors: <13
Embossing: pillow emboss, rim emboss or without emboss
Dome: metal dome or polydome
Embedded LEDs: single color, bi-color or tri-color
Embedded resistor: optional
Shieding layer: optional
Waterproof design: optional
Backlight design: optional
Connector: 2.54mm pitch female housing or 1mm pitch ZIF connector
Thickness: >= 0.6mm