Firstly, 12 key membrane keypads is a low power sensing element and are ideal controls for new microprocessor electronics. Membrane keypads can be made on a printed circuit board or on a polyester film. A-CONTRACT offers Keypad panels with embossed buttons Tactile keypads Keypads with flexible circuit board/connector Membrane keypads with LED backlight Front panels and overlays… Continue reading What are 12 key membrane keypads and How Does It Work?