Access control and alarm monitoring systems; Alarm monitoring systems; Apparatus for transmission of communication; Audio- and video-receivers; Audio equipment for vehicles, namely, stereos, speakers, amplifiers, equalizers, crossovers and speaker housings; Audio headphones; Audio speakers; Automotive, industrial, construction, locomotive, aviation, navigation and marine safety-warning lights, namely, strobes, rotating lights and bar lights; Backpacks especially adapted for holding laptops an...