Custom membrane switches are user-equipment interface utilities specially designed to suit non-standard applications. Switches and keys are essential components of all electrical devices; from lighting to computing, switches allow users to change the way an electronic device operates. Because the range of existing electronic devices is so wide, an equally wide range of switch and key configurations is necessary to accommodate them.

Custom membrane switch manufacturing services offer producers and users of specialized electronics an avenue through which commands can be given to their devices. While many kinds of switches can be custom-made to suit specialized electronics, membrane switches are among the most popular because of their long lifespans, durability, resistance to spills and contaminants and because of their comparative low cost. Membrane keypads, keyboards and other interface equipment can be custom-installed on all kinds of electronic devices. The shape, size, number of switches, color, graphics, text and illumination all change based on the membrane switches' function and purpose. Customizability is necessary because of the vast differences between products and their needs. For example, hospital beds and cell phones both use membrane switches, but require different text and layouts.
Graphic overlays are very important parts of custom membrane switches. They can be different colors or have any kind of text, including numbering, instructions, warnings and brand names. Companies can have their logo printed on graphic overlays as well. These graphics are silk screen or digitally printed, laser etched, or embossed into the outer plastic layer. Custom membrane switches can also be manufactured to include ESD shielding and LED backlighting as well as fiber optic illumination. Many custom membrane switches are engineered to include tactile feedback. Tactile switches indicate to their operators when keystrokes are or are not registered. This useful feature prevents the incorrect or incomplete entry of commands into electronic devices. Custom membrane switches offer a few distinct advantages over keyboards and keypads with moving plastic keys. A membrane switch board involves a single sheet, usually some kind of plastic, affixed to a circuit board. Because there are no moving keys between which contaminants can pass and damage circuits, membrane switches are ideal for use in settings where exposure to contaminants is possible. Membrane switches are also durable, long lasting and inexpensive. This makes them among the most popular keypad materials outside of the context of personal computing.