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Since 1969, Functional Devices, Inc. has been designing and manufacturing quality electronic devices in the United States of America. Our goal is to provide our customers with reliable and economic products along with world-class support from our sales and engineering experts.

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About

Learn more about Functional Devices' history and people.

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Products

Browse our catalog of building automation and lighting controls devices.

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Support

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From the Blog

Protect Expensive Mechanical Equipment with our Self-Calibrating Current Switch

There is one of our current switches that I doubt as many people know about. It is the Self-Calibrating Current Switch.... Read More


How to Wire a Multi-tap Transformer

This week, we go over how to wire our transformers!... Read More


BACnet Compatible AHU Fan Safety or General Purpose Logic Board

Learn all about our brand new RIBMNWLB-7-BC!... Read More


Latching RIBs

Here at Functional Devices, we have another type of relay you may or may not know about: latching relays.... Read More

Careers

Interested in joining our team? Functional Devices is always on the lookout for great people! Check out our open positions and see if you might be a good fit.