Wide Range and High Accuracy The temperature range is -50 -70 / -58 -158 , with high accuracy (+/- 1 (+/- 1.8 ). Suitable for refrigerators, freezers or restaurants, bars, a normal room thermometer used at home and other occasions. Simple and smart operationThere are 3 buttons, easy to operate. Simply press the power button to turn the thermometer on/off. Press the C/F key to select Celsius/Fahrenheit. Using the CLR key, you can clear the maximum and minimum temperature memory values. Large LCD DisplayReal-time temperature can be viewed at a glance by many large numbers on the 1.9 inch LCD screen. Minimum and maximum data records can be read at the same time. The IPX3 waterproof structure can withstand the humidity of the refrigerator or freezer, ensuring safe working conditions. Portable positioning options -You can position the room thermometer in different ways. It can be attached to the refrigerator door by the magnetic back, or it can stand on the hook of the stand and you can continue to use the hook to hang it. the refrigerator shelf, which is very convenient Convenient for placement. The mini design does not take up much space. Maximum and minimum temperature recordThe information on the screen can tell us the maximum, minimum and current temperature at the same time, giving you the values historical temperature readings, so you can easily monitor temperature changes in the fridge and protect yours twice as food safe.