A membrane switch generally consists of two polyester films that are screen printed with conductive ink to form the circuit layers of the switch. A spacer, which is die cut at contact points, is then sandwiched between two circuits. The die-cut holes permit a touch of the finger to close the contact, which in turn completes the circuit. Upon release, the circuit is broken.
A graphic overlay is added to the membrane switch to allow the input device user to identify specific switch contacts. The panel back is laminated with an adhesive for mounting to a backer or enclosure and is terminated with a means for interfacing with the customer’s electronics.
Esterline Interface Technologies membrane switches are designed to meet demanding requirements. Our membrane switch products are particularly popular and reliable in environments were instrumentation need to be highly visible, cleanable, and impervious to surrounding elements.
Membrane switch products are used in applications that require an easy to clean user interface and the ability to operate in a severe and exacting environment.
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