1,Hassle-Free Battery Replacement:Unlike fridge thermometers that require a screwdriver to open, our battery cover can be easily twisted open with a coin. No hassle, no tools—just swap batteries in seconds. 2,Upgraded Accuracy, Wide Measurement:This digital thermometer measures temp between -4℉-122℉ with ±1.8℉high precision, perfect for home refrigerators, freezers, car fridges, coolers and etc. It can also double as an thermometer for house, tracking indoor outdoor temp. 3,Superior Waterproof Rating for Enhanced Durability:With an IPX6 waterproof rating, this thermometer for fridge runs safely and reliably over time, making it ideal for refrigerators, freezers, and even damp environments like basements or wine cellars. 4,Max/Min Temp Recording:Keep track of temperature fluctuations with the built-in max/min record function, allowing you to easily view the max/min temp in the past 24 hours from the cooler thermometer. This feature helps you monitor sudden changes in your fridge, ensuring food safety. 5,Flexible Placement Options & Compact Design:This fridge temperature monitor can be placed in multiple ways: stand it on a shelf, attach it magnetically, or hang it with the hook; Its small size makes it perfect for mini fridges, so you can easily take it with you and use it anywhere without it taking up too much space.