Electrical switches; Electronic proximity sensors and switches; Proximity sensors

Apparatus for recording, transmission and reproduction of sound, data and images; loudspeakers; headphones; sound amplifiers

magnetic ball switch for use as a security and proximity sensor

magnetic ball switch

TRANSMITTERS; TUNERS; AMPLIFIERS; LOUDSPEAKERS; FUSES, HANDLES, AND CABLES; HEADPHONES; MICROPHONES; MEGAPHONES; PHONOGRAPH PICK-UPS; AND PARTS THEREOF

ELECTROACOUSTIC DEVICES, NAMELY RECORDING, TRANSMISSION, CONSERVATION, AND REPLAY UNIT DEVICES; ELECTROACOUSTIC LIGHT-EFFECT DEVICES; ELECTROACOUSTIC CONTROL, DRIVE, AND CONTROL UNIT DEVICES; TRANSMITTERS; TUNERS, AMPLIFIERS, LOUDSPEAKERS; LOUDSPEAKER COMPARTMENTS, FUSES, HANDLES, AND CABLES; HEADPHONES; MICROPHONES; MEGAPHONES; PHONOGRAPH PICK-UPS; AS WELL AS PARTS FOR THE ABOVE-MENTIONED GOODS

Motion detectors; Electronic apparatus, namely, motion detectors