An alarm has an initial time, a setting for how often it should recur (only counts in minutes are possible), and a number of times to recur.
警报有一个初始时间、一个警报重发频率的设置(只能以分钟计算)和重发次数。
2
Combine with alarm, fire extinguishing together, quick detection response, put out the fire point to point in the initial stage, reduce the economic losses caused by fire effectively.