door sentry audible-visual and emergency alarm component system composed of master intercom/annunciator station, power and control unit, transformer, and optional remote tone speakers, which monitors doors, windows, or any device that uses open or closed contact switches, such as heat detectors, door/window magnetic switches, and momentary emergency push buttons

'alarm':8 'audibl':4 'audible-visu':3 'button':51 'close':37 'compon':9 'compos':11 'contact':38 'control':18 'detector':43 'devic':32 'door':1,28 'door/window':44 'emerg':7,49 'heat':42 'intercom/annunciator':14 'magnet':45 'master':13 'momentari':48 'monitor':27 'open':35 'option':22 'power':16 'push':50 'remot':23 'sentri':2 'speaker':25 'station':15 'switch':39,46 'system':10 'tone':24 'transform':20 'unit':19 'use':34 'visual':5 'window':29

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