When triggered by the building's fire alarmcontrolpanel, it alerts building occupants to the location of the nearest exit using directional sound.
当大厦的火警警报控制面板被触发，该扬声器会使用定向声音引导住户到最近的出口。
2
One radial vibration probe positioned in " Y " plane for each rotor after impeller. For vibration display, alarm and shutdown, function wired to controlpanel.
每级叶轮后的转子轴处都装有一径向振动探头，线接至控制柜，为每级振动的显示、报警和停机。
3
RTD mounted after each cooler, for air temperature display, alarm and trip function wired to controlpanel.