RIB Functional
Devices, Inc:

Building Automation.
Engineered for
Reliability.

Industrial Equipment Company (Indeco) is proud to offer the full RIB® line from Functional Devices — America's most trusted manufacturer of building automation components since 1969. Relays, sensors, transformers, and power supplies that keep commercial buildings running.

55+ Years of Manufacturing
10yr Industry-Leading Warranty
<1:16K Field Failure Rate
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Enclosed Industrial Relays
RIB® Series — SPDT, DPDT, Multi-voltage
In Stock
Current Sensors
Split-core & solid-core, 0–200A
Available
Power Supplies & Transformers
Class 2 low-voltage, multi-tap
Coming Soon
BACnet Intelligent Field Devices
Smart building integration
Coming Soon
Made in Indiana, USA
10-Year Product Warranty
100% Factory Tested
55+ Years of Expertise
About the Manufacturer

The Original Relay-in-a-Box® Since 1969

Founded by engineer Albert Rittmann in Sharpsville, Indiana, Functional Devices has spent over five decades engineering the essential components that power smarter, more energy-efficient buildings.

Their flagship RIB® (Relay in a Box®) product line is one of the most recognized names in building automation, HVAC, energy management, and lighting controls. Every product is rigorously tested on the production floor — resulting in a field failure rate of fewer than 1 in 16,000 units and backed by an industry-leading 10-year warranty.

Industrial Equipment Company (INDECO) is an authorized distributor of Functional Devices products. Whether you're an automation contractor specifying relays for a DDC system, or a purchasing team sourcing building automation components, INDECO gives you direct access to the full FDI product line — with the service and support you'd expect from an established industrial distributor.

01
Adaptable
Products engineered with a variety of applications in mind — solving multiple problems with a single, versatile solution.
02
Collaborative
Feedback-driven design, built alongside contractors, engineers, and the end-users who install these products every day.
03
Innovative
As the creators of the original Relay in a Box®, FDI continually introduces solutions that save customers time and money on every project.
04
Reliable
Industry-leading 10-year warranty and a field failure rate below 1:16,000 — peace of mind in every box.
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Product Collections

Now Available
Enclosed Industrial Relays
RIB® relays in protective enclosures for industrial and commercial building automation. SPDT, DPDT, and multi-voltage configurations for HVAC, lighting, and power control applications.
Full Line
All Functional Devices Products
The complete catalog of FDI building automation solutions — relays, current sensors, power supplies, transformers, enclosures, and BACnet intelligent field devices. Expanding continuously.
Why RIB®

Engineered for Demanding Environments

// 01
Easy Installation
Designed for fast, straightforward installation. Clear labeling and practical form factors reduce time on-site for contractors and electricians.
// 02
Harsh Environment Ready
Built to withstand the demanding conditions found in mechanical rooms, rooftop units, and industrial panels, where reliability cannot be compromised.
// 03
100% Factory Tested
Every unit is tested before it leaves the production floor in Sharpsville, Indiana — a standard that achieves a field failure rate below 1 in 16,000.
// 04
Industry-Leading Warranty
Backed by a 10-year warranty — the strongest in the building automation component industry, reflecting confidence in every product shipped.
// 05
Broad Application Coverage
From HVAC and lighting control to energy management and fire & safety — one product family designed to solve many problems across building systems.
// 06
American Manufacturing
Proudly manufactured in Indiana's heartland since 1969. Domestic production ensures consistent quality, faster lead times, and supply chain reliability.

Ready to Specify RIB® for Your Project?

Browse IEC's full catalog of Functional Devices building automation products — in stock and ready to ship.

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RIB Functional Devices, Inc:

© 2026 Industrial Equipment Company (IEC) — Authorized Distributor of Functional Devices, Inc. All RIB® trademarks are the property of Functional Devices, Inc.

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