• DoorKing, Inc.

• 3D Instruments,LLC

• ABB Instrumentation

• AMERIPHONE

• AMP

• AYA-Instruments

• Akinsun Heat Co. Inc.

• Alerton Technologies, Inc.

• Alstom Canada Inc.

• American Ingenuity, Inc.

• Andersen Mfg

• Automatic Switch Co.

• Bailey Controls Co.

• Belden Wire & Cable Co.

• Benchmark, Inc.

• Bender

• Brayman Construction Corporation

• Broan-NuTone Canada

• Broan-NuTone, LLC.

• Buildex, Inc.

• Burling Instruments

• CITEL, Inc.

• CORNELL Communications

• CR Magnetics, Inc.

• Catamount Corporation

• Charles Ramm Associates

• Checkpoint Systems, Inc.

• Classic Doors & Mantels

• Compuquest, Inc.

• Concrete Products Co. of Sioux City, Inc.

• Control Pak International

• Control Products

• Controlled Access, Inc.

• Controlotron Corp.

• Crescent Electric Supply Co.

• Delta-Therm Corp.

• Devar, Inc.

• DuPont Elastomers L.L.C.

• DuPont Packaging and Industrial Poly

• Dukane Corp.

• Dutch Made Inc.

• Dymec

• E-T-A Circuit Breakers

• Electronic Sensors

• Emerson Process Management

• Endress & Hauser

• Executive Information Systems

• Exotic Hardwoods & Veneers

• Federal Signal Corp/Electrical Products

• Firetrol Protection Systems, Inc.

• Fireye

• Food Automation - Service Techniques, Inc. (FAST)

• ForeGenitor Consulting, LLC

• Gems Sensors Inc.

• Globetron Electronics Corporation

• Grasslin Controls Corp.

• Greenlee Textron Inc

• HM Electronics

• Hauck Mfg. Co.

• Heat-Timer Corporation

• Henry G. Dietz Co.

• Howland Electric and Electronics Wholesale Company

• IMC Power

• Infra-Structures Inc.

• Jantek Electronics

• Kitchens By Teipen Inc.

• Klockner Moeller Ltd.

• La Salle & Associates

• Laser Alignment

• Log Cabin Siding

• Lucent Technologies

• Lumenite Control Technology

• Maxitrol Co.

• Meridian Technologies

• Molex

• Newport

• Norman N. Axelrod Associates

• Omega Engrg.

• Optomonitor

• Osmonics

• Pacer Industries

• Patriot Sensors & Controls Corp.

• Popper: J.S. Popper

• Precise Forms Inc.

• Prellwitz/Chilinski Associates, Inc.

• RBE Electronics

• Rauland-Borg Corp.

• Raytek

• Record/Play Tek

• Regin HVAC Products, Inc.

• Sage Technology Solutions, Inc.

• Santa Barbara Control Systems

• Schlage Lock Co.

• Shades of Steel, Inc.

• Siebe Environmental Controls

• Siemon Co.

• Simplex/Grinnell

• Soltec Corp.

• Sound Elevator Co./Entry Plus

• Southwest Microwave

• Spencer Turbine Co.

• Superior Essex

• TCS/Basys Controls

• TRIATEK

• TSI

• TURCK Inc. USA

• Tecumseh Products Company

• Telaire Systems

• Telephonics Corp.

• The Clarient Group

• Thomas & Betts Electrical

• Time Mark Corporation

• Times Square Lighting

• Trane Company

• Tristate & Electric & Electronics Supply Co.

• Trumeter Co.

• U.S. Filter/Stranco

• Ultratech Industries

• Unlimited Craftsmanship & Design

• Valvcon Corporation

• Vandal-Proof Products

• Von Duprin Division

• Watlow

• Wavetek Corp.

• Zenitel USA

• Zetron