Acoustic sound alarms; Antennas; Cabinets for loudspeakers; Cables, electric; Card readers for magnetically encoded cards; Computer keyboards; Computer peripheral devices; Computer cursor control devices, namely, computer mouse; Data cables; Data processing equipment, namely, couplers; Disk drives for computers; Distance measuring apparatus; Earphones; Electric door bells; Electric sensors; Electrical plugs and sockets; Electronic pens; Electronic and optical communications instruments and co...