When triggered by the building's fire alarm control panel, 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。

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Using programmer to on-site number input devices, in order to let them display their detailed address and operation status in the control panel or fire repeater.

通过编码器对输入设备现场编号，使其可在报警控制器或火灾显示盘上显示具体的地址及工作状态。

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