white smoke detector ceiling fire sensor used activate warning systems bui |
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| navigate by keyword : activate alarm alert apartment background buildings carbon ceiling danger detector device domestic electronic emergency equipment extinguishing fire flame home house household indoor indoors interior life living modern monoxide nobody object office order physical protection rescue residential room safety security sensor sign smoke spray sprinkler system systems technology unit used warning white wireless |
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| White smoke detector on ceiling. Fire smoke sensor on ceiling. Ceiling white fire detector used to activate warning systems in buildings. |
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