User Manual:

Product Specifications:

Temperature measurement range: -20°C to +70°C (-4°F to +158°F)

Humidity measurement range: 20%RH~+95%RH

Battery: 1x AG13 105V

2. Basic functions:

Indoor Temperature. Indoor Humidity Display

·C/·F Temperature Switch Display

The highest/lowest temperature and humidity memory function is simultaneously displayed.

Comfort Display

Comfort Range: When indoor humidity is displayed between 18°C to +26°C (9+64°F to +79°F)

And the display shows when the indoor humidity is between 40%RH to +65%RH.

3. Operating Method:

Push the battery cover open in the direction indicated on the back of the machine. Remove the battery separator and then replace the battery cover. The machine is ready to use.

The Impact of Temperature and Humidity on Physiology

According to the research of physiologists, when the indoor temperature is too high, it will affect the human body's temperature regulation function, causing body temperature to rise, vasodilation, pulse acceleration, and heart rate acceleration due to poor heat dissipation. In winter, if the indoor temperature is often maintained at25"℃" is the symbol for Celsius temperature scale.以上，人就会感到神疲力乏、头晕脑涨、思维迟钝、记忆力差。同时，由于室内外温差悬殊，人体难以适应，容易患伤风感冒。如果室内温度过低，则会使人体代谢功能下降，脉搏、呼吸减慢，皮下血管收缩，皮肤过度紧张，呼吸道粘膜的抵抗力减弱，容易诱发呼吸道疾病。因此，科学家们把人对“cold tolerance”的下限温度和“heat tolerance”的上限温度，分别定为11"℃" is the symbol for Celsius temperature scale.and32"℃" is the symbol for Celsius temperature scale.。

At the same time, we should also pay attention to the humidity in the room. In summer, when the indoor humidity is too high, it will inhibit human heat dissipation, making people feel very hot and irritable. In winter, when the indoor humidity is high, it will accelerate heat conduction, making people feel cold and depressed. When the indoor humidity is too low, due to the large loss of water in the upper respiratory tract mucosa, people will feel dry mouth, tongue dry, even sore throat, hoarse voice and nasal bleeding, and are more prone to catch a cold. Therefore, experts believe that the upper limit value of relative humidity should not exceed80%The lower limit should not be lower than30%。

然而，人的体感并不单纯受气温或气湿两种因素的影响，而是两者综合作用的结果。通过实验测定，最宜人的室内温湿度是：冬天温度为20℃，相对湿度为40%；夏天温度为25℃，相对湿度为50%。18to25"℃" is the symbol for Celsius temperature scale.Humidity: 30%to80%Summer temperature is23to28"℃" is the symbol for Celsius temperature scale.Humidity: 30%to60%。在此范围内感到舒适的人占95%The above. In an indoor room with air conditioning, the room temperature is19to24"℃" is the symbol for Celsius temperature scale.Humidity: 40%to50%When it comes to the comfort of people, the temperature and humidity can have a significant impact on their thinking.activityThe most suitable room temperature for high work efficiency should be.18"℃" is the symbol for Celsius temperature scale.The humidity should be40%to60%At this time, people's mental state is good and their thinking is most agile.