可以设计报警温湿度上下限。
Temperature and humidity alarm can be designed to the limits.
该系统还具有声光报警功能，并可通过按键对报警上下限进行设置。
The system also has the function of sound and light alarm, and it can set the alarm value by the upper and lower button.
比较功能，上下限偏差值自由设定，红绿指示灯及蜂鸣器自动声光报警设置；
Compare function, free to set upper and lower deviation, red and green indicator light and buzzer sound and light alarm settings automatically;
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