Amplifiers; Headsets; Photodiodes; Semiconductors; Transformers; Wattmeters; Wavemeters; Electric circuit switches; Flashlights for use in photography; Frequency meters; Laser pointers; Laser rangefinders; Optical lenses; Optical sensors; Power controllers; Protective eyeglasses; Protective spectacles; Safety goggles; Signal generators; Telecommunications equipment, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-space optics transmission systems, switches including Ethernet switches and routers, fiber-to-the-home and ethernet-over-VDSL access aggregators, terminators and repeaters, and remote presence management products, namely, switches, and console, alarm, sensor and power management devices
Electrical and Scientific Apparatus