Functional Devices

Functional Devices, Inc. has been designing and manufacturing quality electronic devices in the United States of America since 1969. Their goal is to provide high quality products for the most reliable and economical solutions to the needs of our customers, along with world-class support from our sales and engineering experts.

We offer the following product lines from Functional Devices: Accessories, Current Sensor & Relay Combos, Current Sensors, Enclosures, Energy Savings Devices, Intelligent Field Devices, Light Controllers, Power Controls, Power Monitoring, Power Supplies, Relays, Transformers, Ul924 Emergency Lighting Relays, Wireless Devices.
Below is a highlight of a few of the products. For complete information on products please visit FDI's website.


Current Transducer
An enclosed solid core current to voltage transducers.
Power Supply
The 500VA Enclosed Power Supply with 5 Class 2 100VA, 24VAC Outputs is ideally suited to power multiple MACH-System controllers and devices.