If controller is linked with alarm output and network fire control expansion board, it can also drive alarm annunciator calling to deter crime and warn the security guard.
如果控制器接了报警输出及消防联动扩展板，还可以现场驱动报警器鸣叫，威慑犯罪人员和提醒保安赶来。
If controller is linked with alarm output and network fire control expansion board, it can also drive alarm annunciator calling to deter crime and warn the security guard.
如果控制器接了报警输出及消防联动扩展板，还可以现场驱动报警器鸣叫，威慑犯罪人员和提醒保安赶来。
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