security systems comprised of electronic motion and proximity sensors, security anti-intrusion alarms, optical readers, programmable locking keypads, handset telephones, electric distribution consoles, computers, communications apparatus and electrical power distribution units for residential and commercial use

'alarm':14 'anti':12 'anti-intrus':11 'apparatus':27 'commerci':36 'communic':26 'compris':3 'comput':25 'consol':24 'distribut':23,31 'electr':22,29 'electron':5 'handset':20 'intrus':13 'keypad':19 'lock':18 'motion':6 'optic':15 'power':30 'programm':17 'proxim':8 'reader':16 'residenti':34 'secur':1,10 'sensor':9 'system':2 'telephon':21 'unit':32 'use':37

DIRECTV

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