当报警器监测到火情信息后，立即产生声光报警信号。
When the alarm monitors the fire information, it produces sound-light alarm signal immediately.
测试时，电阻或电压超出设定范围时，分别有声光报警信号。
Audible and visual alarm signals will be output if resistance or voltage is beyond the range;
路灯故障时，可发出声光报警信号，并显示故障路灯地址编号。
When the lamp failed to light, it may be audible and visual alarm signals and display street address of fault ones.
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