Alpha Technologies
Bison Manufacturing
Computerized Traffic Control
Digi International, Inc.
Duralight
Eberle Design
Econolite Control Products
EDCO
Eltec
EtherWan Systems
GDI
Henke Enterprises
IFS

Intuicom
iMPATH Networks
Intelect Technologies
Intelligent Devices
Litetronics
Metretek, Inc.
National Sign & Signal
Never-Fail Loop Systems
MS Sedco
Paradigm Traffic Systems
Pat America, Inc.
PDC
Pelco Products

Proxim Wireless Networks
Reno A & E
PSI
Safetran
Smartstud Systems
Southwest Photovoltaic Systems
Traffic Signal, Inc.
TrafficWerks
Trigg Industries
Vicon Industries, Inc.
Vision Systems/AdPro
Wells Signs