Alarm installations and alarms; Alarm monitoring systems; Alarm sensors; Computer network adapters, switches, routers and hubs; Computer network hubs, switches and routers; Computer network interface devices; Computer networking hardware; Computer peripheral apparatus; Computer peripheral devices; Computer peripheral equipment; Ethernet adapters; Ethernet cables; Telecommunications equipment, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division mul...