close fire sprinkler the ceiling for safety security system protect |
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| navigate by keyword : alarm alert background building button ceiling close control danger detection detector doorway electronic emergency engineering equipment evacuation extinguish extinguisher extinguishing fire firemen flame heat house industrial office panel pipeline pressure prevent prevention protect protection rescue safe safety security sensor service sign siren smoke spray sprinkler structure system systems technology warning water when |
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| Fire detection and alarm systems equipment in building, Close-up fire sprinkler on the ceiling for safety security system protect and fire prevent or prevention when heat or flame detector is alert |
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