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1 FMSD型防火门自动闭门释放器FMSD型系列产品包括FMSD-5和FMSD-7型防火门自动闭门释放器,以及与其配套的SXQ型顺序器(带去盲角)、电子延时器、反馈反相器、区域控制箱、总控箱。这一系列产品均为该公司的专利产品,且经过国家固定灭
1 FMSD-type fire doors automatic door release FMSD-type products include FMSD-5 and FMSD-7 fire doors automatic door release, and its accompanying SXQ-type sequence with blind angle, electronic delay , Feedback inverter, regional control box, the total control box. This series of products are the company’s patented product, and after the country fixed off