Amplifiers; Colorimeters; Densimeters; Earphones; Photometers; Access control and alarm monitoring systems; Biometric fingerprint door locks; Burglar alarms; Computer hardware and peripheral devices; Digital door locks; Downloadable computer software for use as a spreadsheet, word processing; Fire alarm and emergency evacuation devices, namely, fire alarm control panels, smoke detectors, heat detectors, alarm pull stations, audible and visible notification appliances, strobes, sirens, bells, horns, and speakers; Optical inspection apparatus; Portable telecommunication instant messaging devices; Scientific apparatus, namely, spectrometers and parts and fittings therefor; Smart watches; Surveying instruments; 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; Video projectors; Videocameras