瑞可达 DFA 127防火开门机—— 适用于防火防烟场景
瑞可达 DFA 127防火开门机经认证可作为防火防烟门使用。在火灾发生时，烟雾和热探测器或火灾报警系统发出的信号将立即触发通道关闭。关闭动作通过弹簧力实现。此外，Record SFR 127的机械顺序控制装置还可实现双扇防火门的可靠应用。
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