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    Surge Protection & UPS
Functional Devices, Inc. Logo

Functional Devices, Inc.

Functional Devices, Inc., has been designing and manufacturing high-quality electronic devices in the U.S. since 1969. Their products — including RIB® (Relay in a Box®) relays, current sensors, power supplies, transformers, and lighting controls — are...  Read more

Access Controls & Security Devices

  1. Proximity Readers

Controllers & I/O Devices

  1. I/O Modules/Expanders

Enclosures

  1. Accessories - Enclosures

  2. NEMA 1

  3. NEMA 4X/Metallic

  4. NEMA 4X/Non-Metallic

  5. Pre-Fabricated Panels

  6. Subpanels

Lighting - Lighting Systems & Controls

  1. Accessories - Lighting

  2. Dimmer Controls & Relays

  3. Lighting Relays & UL924 Relays

  4. Occupancy Sensors

  5. Specialty Controllers/ Switches

  6. Switches

Panel Devices

  1. Circuit Breakers/ Fuses

  2. Enclosed Transformers

  3. Power Supplies

  4. Pre-Fabricated Panels

Power Meters/Current Switches/Current Sensors

  1. Current Sensors

  2. Current Switches

  3. Current Transformers

  4. KW/ KWH Energy/Power Meters

Power Supplies

  1. Accessories - Transformers

  2. Enclosed Transformers

  3. Power Supplies

Relays & Contactors

  1. Accessories - Relays

  2. Lighting Relays & UL924 Relays

  3. Power Relays

  4. Pre-Packaged Relays (RIB/ PAM/ MR/ CVR)

  5. Relay Logic Boards

  6. Track Mounted Relays

Surge Protection & UPS

  1. UPS

Transformers

  1. Accessories - Transformers

  2. Control Transformers

  3. Enclosed Transformers

  4. Power Supplies

Wireless

  1. Accessories - Wireless Sensors

  2. Wireless Output Modules & Relays

  3. Wireless Sensors & Input Devices