1：能够实时显示环境温度。

2：能够保存使用时间内的最大值和最小值，能够查阅。

3：有温度报警功能，能够设置报警温度。用绿灯表示正常温度，红灯表示报警同时发声。-1: the ambient temperature can be displayed in real time.

2: be able to save the time of use of the maximum and minimum, it is possible to refer to.

3: There is a temperature alarm function, can set alarm temperature. Green light indicates normal temperature, a red light indicates an alarm to sound at the same time.