| ABB (Variable Frequency Drives) |
| ACI (Sensors and Transmitters) |
| Advanced Control Technologies (ACT, interface controls) |
| Air Products & Controls (Duct smoke detectors, packaged control relay solutions) |
| Airtest Technologies Inc. (Toxic Gas sensors) |
| Alco (Freezestats) |
| Aube (Thermostats) |
| BAPI (Temperature, humidity, mixed air, DP Xducers, air quality, power supplies) |
| Belimo Air Controls (Actuators, valves) |
| Brady Worldwide Inc. (Label makers) |
| C3 Controls (Pushbuttons, pilot devices, terminal blocks) |
| Cleveland Controls (Air Flow switches) |
| Connect Air International (wire, cable) |
| Contemporary Controls Systems (industrial networking products) |
| ControlAir (Pressure Transmitters) |
| Control Resources |
| Core/Lectro Components (Transformers, relays in a box) |
| Cristal Control (SCR) |
| Cutler Hammer |
| Danfoss/Graham (Variable frequency drives) |
| Ditek (Lighting and surge protection) |
| Dwyer |
| Dynacon Inc. |
| E-Mon (Power Monitoring, KW Transducers) |
| Elkor |
| Entrelec (Electrical, terminal blocks) |
| Erie (Thermostats, valves) |
| Field Server |
| Fluke (Test Tools) |
| Fox Thermal Instruments Inc. (Flow meters) |
| Functional Devices (Transformers, relays in a box, current switches) |
| Greystone |
| Hoffman (Enclosures) |
| Honeywell (complete line less automation panels) |
| Humphrey (Electro-pneumatic valves) |
| IDEC (Relays, Pushbuttons, Smart Relays, Power Supplies) |
| Intec Controls (Pressure/flow switches & sensors, freezestats) |
| Intermatic (timers) |
| Johnson Controls (complete line less automation panels) |
| Kele |
| KMC (Kreuter) (complete line less automation panels) |
| Linear Corporation (Wireless security devices and systems) |
| Macromatic (Phase monitor relays) |
| Mamac systems |
| Marcus (Transformers) |
| MDI Incorporated (Contactors, Relays, Switches) |
| Nailor (Dampers) |
| Neilsen-Kuljian, Inc (NK Tech.) (Current sensors/switches, Power Metering) |
| Neptronic (Damper Actuators, valves, sensors) |
| Omron (Relays) |
| Onicon (Liquid flow sensors) |
| Panduit (Wire duct & cover, panel & installation materials) |
| Paragon (Timers) |
| Parker-Hannifin (Solenoid valves) |
| Performance Pipe (Pneumatic tubing) |
| Pilla Electrical Products (Pilot devices/pushbuttons) |
| Raytek (Mini-temp infrared thermometers) |
| Ruskin (Dampers) |
| Sauter (Valves and actuators) |
| Setra Systems (Pressure transmitters) |
| Siebe or Invensys (Barber-Colman) |
| Siemens Building Technology (Valves, thermostats, actuators, enclosures) |
| Spartan (Valves, thermostats) |
| TCS/BASYS (Programmable Thermostats) |
| Tekmar (Controls) |
| Telaire (Toxic Gas sensors) |
| TAMCO (Dampers) |
| Thermolec (SCR) |
| Triatek Lighting (Controls) |
| Triatek (Fume Hood Controls) |
| Uni-Guard (Thermostat Covers) |
| United Electric (Pressure switches) |
| Vaisala (Humidity transmitters, CO, CO2, Dewpoint) |
| Veris Industries |
| Viconics (Programmable Thermostats) |
| Vulcain (Toxic Gas sensors) |
