telephone apparatus, namely intercoms; FM radio intercoms with integrated alarm function; mobile communication equipment, namely transmitters, receivers, transceivers; remote sensors, monitors, signalers; controllers, simplex, duplex and multiplex radios; electrical and electronic signal generators, filters, and amplifiers; electronic entry, exit, threshold and access sensors and monitors, audio/visual indicators, electronic touch sensitive switches, encoders, decoders, encoded radios, single and multiple channel radios, anti-intrusion alarms and operating software therefor, computer output devices and peripherals, namely printers, plotters, video display units, disks, CD-ROM's, blank video and audio tapes; video and audio tapes pre-recorded with informational messages or programs; loudspeakers, microphones, antennas, voice and data recorders and players, telephone answering machines, burglar alarms, electric door bells, electric switches, triggers, latches, relays and actuators; batteries, battery chargers, electric door openers and closers; parts and fittings for all the aforesaid goods