High Precision Readings Temperature ranges from -10 Celsius ~+ 50 Celsius (+14 Fahrenheit to +122 Fahrenheit) ; humidity ranges from 20% to 90% RH; accuracy: +/-1 Celsius.(2 Fahrenheit). With high accuracy, this meter is the perfect household device.Comfortable Indicator Humidity Temperature meter with face icon indicates-- DRY/COMFORT/WET condition, ensuring you're always aware of changes of your home/household at a quick glance. Multifunctional Purposes Can be worked as refrigerator thermometer, freezer thermometer, animal thermometer, soil thermometer, humidor hygrometer and more. Personalized Design Kickstand and magnetic back can be placed on the table, refrigerator or anywhere. Meanwhile, equipped with LCD screen, it is easy to read.Lightweight, Pocket, Convenient for Carrying A perfect tool for indoor or taking with you on-the-go. MOD key: (undefined) In the normal mode, press and hold the MOD key for two seconds to enter the set time mode. In the set time mode, the Celsius / F key adjusts the value upwards, and the MAX / MIN key adjusts the value downwards. After adjusting the value, press MODE to exit to the date setting mode. At this time, the digit of the year jumps. Similarly, the Celsius / Fahrenheit, MAX / MIN keys adjust the value up and down. After the year is adjusted, it automatically enters the month and then the date. After adjusting the value, press MOD to enter the alarm setting mode. Similarly, Celsius / Fahrenheit, MAX / MIN button to adjust the value up and down. After adjusting, press MOD button to set the speed time setting mode. In the normal mode, short press the MOD key to turn on or off the alarm clock function, and the corresponding alarm clock logo will be displayed or disappeared. Celsius / Fahrenheit key: (undefined) In normal mode, press Celsius / Fahrenheit key to convert between Celsius andFahrenheit. MAX / MIN button: (2) In normal mode, press the MAX / MIN button to display the highest and lowest temperature and humidity, and press and hold the MAX and Celsius / Fahrenheit buttons to clear the highest and lowest records. If it is not cleared, it will be cleared automatically after 00:00. Four: When the temperature is 20 ~ 26, the humidity is 50% ~ 70% comfortable, and it is displayed as a middle expression. At any temperature, the humidity is greater than 70%, which means humid. Dry bath at any temperature below 50% colour:white Material:ABS size:12.5*7.5cm Package Contents: 1 * Thermometer 1 * usb data cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.