Features:_x000D_ _x000D_ 1. Record the temperature at a specific time: The highest-minimum thermometer is used to record the highest temperature and minimum temperature of air at a certain time._x000D_ _x000D_ 2. Principle: The temperature around the tube in a blue indicating needle of a wool stoma, blue as the temperature changes the index up, and when the temperature drops, the blue pointer not affected by the temperature drop and changes, which indicates the maximum or minimum temperature._x000D_ _x000D_ 3. Workmanship: Fine workmanship and good performance. Convenient to use._x000D_ _x000D_ Description:_x000D_ _x000D_ It is used to record the highest and lowest temperature in the air in a certain period of time. Based on this, it can scientifically guide you to maintain fruits, vegetables, seedlings, flowers and various plants._x000D_ _x000D_ How To Use:_x000D_ _x000D_ 1.The thermometer should be suspended in the air._x000D_ _x000D_ 2.Observe the time of temperature, and make a decision. Record the temperature indicated at the lower end of the indicator when observing, and press the button to attract the needle and the column at both ends._x000D_ _x000D_ Specifications:_x000D_ _x000D_ Material: Plastic + Acrylic_x000D_ _x000D_ Color: White_x000D_ _x000D_ Size: 230*85*20mm_x000D_ _x000D_ Temperature Range: - 40 ~ +50 _x000D_ _x000D_ Suitable environment for human body: 15 ~ 25 _x000D_ _x000D_ Relative humidity: 45%RH~75%RH_x000D_ _x000D_ Room environment: 40%RH~70%RH_x000D_ _x000D_ Library Art Museum: 45%RH~60%RH_x000D_ _x000D_ Storage of clothing, cotton and wool textiles: 40%RH~60%RH_x000D_ _x000D_ Storage of dairy products: 50%RH~60% RH_x000D_ _x000D_ Package Information:_x000D_ _x000D_ Package Size: 210*65*29mm/8.19*2.54*1.13in _x000D_ _x000D_ Package Weight: 200g/7oz_x000D_ _x000D_ General Box Package_x000D_ _x000D_ Package Included:_x000D_ _x000D_ 1 * Max-Min Thermometer Notes:_x000D_ 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures._x000D_ 2. Please allow slight dimension difference due to different manual measurement. _x000D_