Proximity Switches

A reliable source for Membrane Switch information and leading Membrane Switch Companies & Manufacturers.

Infrared proximity switches work by sending out beams of infrared invisible light. A photodetector on the switch determines if there are any objects nearby by detecting any reflection of the beam of light that was sent out. However, due to background light, a switch with only a light source and photodiode is susceptible to inaccurate readings. For that reason, more complex models modulate the transmitted light at a specific frequency and have receivers that only respond to said frequency. Read Moreā€¦

Proximity Switches Proximity switches are made to open or close an electrical circuit when they either make contact or come within a certain distance of an object. They detect objects in close "proximity." Proximity switches come in four basic types, which are: infrared, acoustic, capacitive, and inductive.

Leading Manufacturers

Eden Prairie, MN  |  800-806-6113

Our membrane switches are known for their high-quality and affordable prices. We work hard to find the precise parts that will work with your every need. It is our goal to create a relationship with you that is beneficial to both parties. We will go above and beyond simply to meet your needs. Find out more about us when you give us a call today!

Request A Quote

Douglas Corporation $$$

Perry, NY  |  800-227-5718

JN White is an ISO 9001:2015 and ITAR-certified manufacturer of membrane switches, graphic overlays, and custom labels. We nimbly handle projects big and small and have the uncommon ability to translate what our customers need into high-quality, high-precision outcomes.

Request A Quote

JN White $$$

Lawrence, MA  |  800-225-2538

Techprint is a custom designer and manufacturer of specialty graphics and printed electronic products including keyboards, membrane switches, graphic overlays, labels and much more. Total in-house capabilities and superior technical support allow us to provide a full line of high quality products including standard flat switches, hybrid rigid and flexible circuits, tactile switches and nameplates.

Request A Quote

Techprint Incorporated $$$

Garland, TX  |  972-475-0770

Marking Systems Inc. was founded in 1970 to serve the Computer, Telecommunications, Electronics, Industrial Machine, Medical, Ad Specialty, Sporting goods, Marine, Measurement/Control and many other industries. Our specialty is providing products, including membrane switches of unrivaled quality, to our diverse customer base. Call us or visit our website today for more information.

Request A Quote

Marking Systems Inc. $$$

Calabasas, CA  |  866-317-0208

Pacific West America, Inc. has spent the past 18 years developing high-quality membrane switches, control panels, and flex-circuits. Our team has the knowledge to make sure your membrane switch has the right appearance, lighting, and texture for your application. For the best quality systems in the industry, contact Pacific West America, Inc. for solutions you can trust. Visit our website to learn more!

Request A Quote

Pacific West America, Inc. $$$

Pomona, CA  |  909-784-6305

King Epoxy Emblem Technology Partners (KTP) is your go-to source for membrane switches. With our 16,900-square-foot facility, we have a broad range of capabilities such as in-house design and engineering support, warehousing, and turnkey assembly. We carefully analyze your design requirements and will assist you in finding a solution that addresses your concerns.

Request A Quote

King Epoxy Technology Partners (KTP) $$$
placeholder image Douglas Corporation JN White Techprint Incorporated Marking Systems Inc. Pacific West America, Inc. King Epoxy Technology Partners (KTP)

Models that are even more complex can use the light reflected from an object to compute its distance from the sensor. In principle, acoustic proximity switches are similar to infrared switches, but instead of light, they use sound. Acoustic switches work by using a transducer to transmit inaudible sound waves at various frequencies in a preset sequence. Then, they measure the length of time the sound takes to hit a nearby object then return to a second transducer on the switch.

Membrane Switch Circuit Membrane Switch Circuit - Douglas Corporation

Essentially, acoustic switches are employing echolocation, a practice similar to sonar, used in nature by bats and dolphins. Capacitive proximity switches sense distance to objects by detecting changes in surrounding capacitance. A radio-frequency oscillator is connected to a metal plate, and its frequency changes when the plate nears an object.

When this change takes place, the frequency detector sends a signal telling the switch to open or close. Finally, inductive proximity switches sense distances to objects by generating magnetic fields, similar in this way, to metal detectors. To function, a wire coil is charged with an electrical current, which is measured by an electronic circuit. If a metallic part gets close enough to the coil, the current will increase and the switch will open or close accordingly.

Proximity switches are used primarily in manufacturing processes and equipment, robotics and security systems. For example, proximity switches may measure the position of machine components, detect the opening of a door or monitor a robot or its components proximity to an object, and steer it accordingly.

Proximity Switches Informational Video