Access control and alarm monitoring systems; Electric and electronic video surveillance installations; Electronic access control systems for interlocking doors; Electronic equipment, namely, transformers, baluns, and cables, all used in connection with computers, computer peripheral devices, televisions, audio-video equipment, closed-circuit TV equipment and telecommunication equipment; Electronic video surveillance products, namely, electronic components of security systems; Mounting racks for telecommunications hardware; Security control panels and motion detectors; Security products, namely, entry door systems comprising touch pads and security doors; Structured cabling systems comprised of telecommunications cables and hardware; Telecommunications and data networking hardware, namely, devices for transporting and aggregating voice, data, and video communications across multiple network infrastructures and communications protocols; Wireless adapters used to link computers to a telecommunications network