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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.
Learn more about Functional Devices' history and people.
Browse our catalog of building automation and lighting controls devices.
Need help? We offer documentation, downloads, and live technical support.
Our most popular RIB® Relay is now available in 5, 10, 25, and 100 count Multi-Packs!... Read More
This week's Tech Tuesday is all about current sensor and relay combos!... Read More
A customer needed a relay device with low or limited inrush current on the relay coil. Check out this Tech Tuesday to hear how we helped him!... Read More
At Functional Devices, Inc., we manufacture multiple types of current sensors. We have current switches, current transducers, and relay/current sensor combo devices, and ... Read More
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.