portable electronic outdoor security systems, primarily comprising motion detector, ultrasound transducer, audio-visual alarms, automatic telephone dialer, and computer hardware and circuitry contained within a housing

'alarm':15 'audio':13 'audio-visu':12 'automat':16 'circuitri':23 'compris':7 'comput':20 'contain':24 'detector':9 'dialer':18 'electron':2 'hardwar':21 'hous':27 'motion':8 'outdoor':3 'portabl':1 'primarili':6 'secur':4 'system':5 'telephon':17 'transduc':11 'ultrasound':10 'visual':14 'within':25

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