726-77 - Radio Frequency Scanner Receivers and Amplifiers (Including RF Connectors, Analyzers, Counters, Meters, Switches)
205-39 - Duplicators, DVD, CD, Hard Drives, etc., Environmentally Certified Products
690-34 - Converters and Inverters, Power
287-96 - Wire and Cable, Electronic: Audio, Coaxial, Hook-Up, Lead-In, etc.
880-55 - Projectors, Motion Picture (Standard Type Only); Carrying Cases; Parts, and Accessories
726-13 - Amplifiers (Not TV Antenna): Differential, Linear, Pulse, Video Processing, etc. (Including Preamplifiers)
880-46 - Projection Stands, Tables, etc., Standard and Rear-Projection Types
840-55 - Switchers, Audio and Video
880-67 - Projectors (Not Otherwise Classified): Combination Filmstrip-Slide Projectors, Rear-Projection Slide Units, Rear-Projection Filmstrip Units, LCD Projectors