Nine, the upper limit temperature alarm function, temperature alarm function, the upper / lower limit temperature can be set;
温度上限报警功能， 温度下限报警功能，上/下限温度可设定 ；
When temperature is less than lower limit, calefaction circuit starts.
温度低于下限，启动加热。
When temperature is less than lower limit, calefaction circuit starts.
温度低于下限，启动加热。
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