| 摘要 |
A sprinkler is provided mounted flush in a ceiling and has an outer escutcheon plate releasably held in place by heat-responsive elements having a selected release temperature. The escutcheon plate is normally in covering relation to a sprinkler which has a strut containing a heat-responsive element having a different selected release temperature. Heat-sensing fins movable downwardly below the ceiling line upon release of the escutcheon plate contribute to sensitivity.
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