求翻译：2、 防火门监控系统对各种防火门的开启、关闭及故障状态进行监控。当火灾发生时，接收消防联动控制器发出的火警信号后，自动切断DC24V输出电压、使系统的常开防火门自行关闭、同时将关闭情况反馈给防火门监控器。防火门监控器系统能保持常开防火门的打开状态，也可现场手动推动防火门，实现手动关闭和复位防火门。防火门关闭后成为手动推开后自行关闭的活动式防火门。是什么意思？

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2, * Fire Door monitoring system for a variety of fire door to open, close and fault status monitoring. When when the fire broke out, Fire Services Department (FSD) received the manual control of a fire signal, you are automatically switched off 24 DC V output voltage, the system normally open fire

2nd, The fire door supervisory system to each kind of fire door opening, shutting down and the malfunction carries on the monitoring.When the fire occurs, after the receive fire prevention linkage controller sends out the fire alarm signal, the automatic turnoff DC24V output voltage, will cause the

2, door monitoring system for all kinds of fire doors open and close monitoring and fault status. When the fire occurred, after receiving the fire alarm fire controllers, automatically cut off the output voltage DC24V, often open fire doors of the system shut itself down, will also close back to the

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