Acoustic couplers; Alarm monitoring systems; Audio- and video-receivers; Cables, electric; Communication hubs; Computer peripheral devices; Measuring apparatus, namely, angle finders; Plug adaptors; Plug-in connectors; Portable media players; Radios; Sound transmitting apparatus; Transmitters of electronic signals; USB card readers; Wires, electric; Apparatus for transmission of communication; Blank integrated circuit cards; Computer chips; Computer interface boards; Computer network interfac...