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elevator smoke blocking curtain

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  • The basic function of smoke curtain
    The basic function of smoke curtain
    What is the basic funtions of smoke curtain?1-Manually control the upward, downward and stop functions of the smoke curtain2.Automatically working:a. When the smoke curtain controller receiveds the action signal of the smoke sensor, it will automatically descend to it's working position.b .When t
    2022-10-17
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