Quick Actions:

Find A Distributor

We've got distributors across the US and Canada, as well as online.

See Distributors

Find a Lighting Rep

We've got an interactive map to help you find a lighting rep near you.

View Map

Track your Order

Do you need to figure out where your order is? Click here to find out.

Track your Order

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.

Featured Products


Learn more about Functional Devices' history and people.

More Information


Browse our catalog of building automation and lighting controls devices.

Find a Product


Need help? We offer documentation, downloads, and live technical support.

Browse Support Options

From the Blog

Employee Spotlight: Matt Long

How long have you been at Functional Devices? Next month will make nine years. What made you want to become an engineer? I have a weird relationship with math – I r... Read More

Providing Override Feedback to Your Controller with our RIB® Device

Most people that call Functional Devices, Inc. Technical Support are aware of our popular products like RIB® relays, current sensors, power supplies and transformers, bu... Read More

Employee Spotlight: Dolores Medlen

How long have you been at Functional Devices? I started on January 17, 2005. What made you want to work at Functional Devices? At first it was just to get out of the hous... Read More

Relay: Similar to a Light Switch!

Many times when I take tech calls, I will answer a question on how to wire up a RIB® relay to control a load. When this happens, I have a go-to analogy that always seems... Read More

Production Team Member

Looking for a manufacturing job in the central Indiana area? Come be part of our Production Team! Functional Devices manufactures electronic... View Job

Outside Sales

How do you want to spend your work week? Surrounded by creative minds working together at a privately-owned business? Traveling to customers... View Job