Large and Waterproof LCD Display- You can read measurements at a glance with an extra large, easy-to-read LCD display. Ideal for those who do not have better eyesight. The IPX3 waterproof structure can withstand the humidity of the cold room or the freezer, ensuring its safe operation. Simple and Smart Operation- Easy to use thermometer with only 3 buttons. Just press the power button to turn on\/off the thermometer. Press the C\/F key to select Celsius\/Fahrenheit. Press the CLR key to delete the Max\/Min record. When you restart the thermometer, the Max\/Min record will be reset. Wide Range and High Accuracy- The temperature range of -20~50 (-4~122) with high accuracy (1\/2). You can use it in a refrigerator, freezer or as a room thermometer for food safety or other occasions. Min and Max Temperature Record- The refrigerator thermometer provides a historical temperature reading. With this function, you can easily monitor the temperature change of your refrigerator and double protect your food safety. 2 Choices of Portable Placement- You can either place the stand on the table or turn it over and use the hook to hang it on a refrigerated shelf. The mini design won't take up too much room in your fridge. It is very compact and comfortable to hold.