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    Surge Protection & UPS
Functional Devices, Inc. Logo

Functional Devices, Inc.

A leader in the HVAC, building controls, energy management, lighting controls, and wireless industries, Functional Devices manufacture RIB relays, current sensors, enclosures, power supplies, and much more.

Access Controls & Security Devices

  1. Proximity Readers

Enclosures

  1. Accessories - Enclosures

  2. NEMA 1

  3. NEMA 4X/Metallic

  4. NEMA 4X/Non-Metallic

  5. 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

Power Meters/Current Switches/Current Sensors

  1. Current Sensors

  2. Current Switches

  3. Current Transformers

  4. KW/ KWH Energy/Power Meters

Relays & Contactors

  1. Accessories - Relays

  2. I/ O Expanders

  3. Lighting Relays & UL924 Relays

  4. Power Relays

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

  6. Relay Logic Boards

  7. Track Mounted Relays

Surge Protection & UPS

  1. UPS

Transformers & Power Supplies

  1. Accessories - Transformers

  2. Control Transformers

  3. Power Supplies

Wireless Sensors

  1. Accessories - Wireless Sensors

  2. Wireless Door/Window Contacts

  3. Wireless Output Modules & Relays