The alarm model gives the alarm signal in abnormal condition, it can auto stop the system when serious fault happened, and remind the workers to repair it.

报警模块在系统出现异常情况下可以给出报警信号，且在出现严重故障时系统自动停止工作。

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The electric point mercury thermometer call transmit the electric signal when get the setting temperature, and get the auto control or alarm funnction.

电接点水银温度计能在工作温度达到或超过（低于）给定值时发出电信号，从而实现自动控制发讯或报警等功能。

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