No matter, because it’s actually pretty easy to build your own. Membrane switches are usually made with silkscreen conductive inks on fancy plastic, but that’s not a requirement to build your own.

ISO certified manufacturer of membrane switches, graphic overlays, custom nameplates and control panels, backlit LED displays and value added assemblies. Products proudly made in Orange County , ...

PCB Design / Layout Full design and layout of the printed circuit board (PCB) circuitry for the membrane switch or keypad. This can be performed in-house, or possibly by a development partner. Just-In ...

(1) Most QWERTY computer keyboards use a single rubber-like membrane underneath the keys that makes contact with a circuit board when the key is fully depressed. Also called a "dome switch ...