Bigger screen, Better reading : This fridge thermometer has 2.56 inch electronic LCD display, the information on the screen can tell us the max, min and the current temperature at the same time. Powered by 3 Volt Model CR2032 Lithium Battery. You can learn the accurate temperature info of your freezer room all the timeSimple Operation: Simple electronic thermometer with only 3 buttons . Just press the on or off button to switch the thermometer on/ off. Press C/ F button to select centigrade or fahrenheit. Once you reboot the thermometer, the max/ min temperature will be resetWidely Temperature Meauring Range: Accuracy 2F. Resolution: 0.2F. The temperature can range from -4F to 122F and it is accurate. Allowing you to use this in the fridge, freezer. it can act the role of general thermometer for indoor or outdoorPortable Ways: You have 2 different choices for placing this indoor thermometer. Either use the stand to place it on the table-top, flip the stand over and use the hook to hang it on a refrigerator shelf. Mini design and won't take too much places of your fridgeIPX3 Waterproof: Waterproof structure (waterproof level IPX3) can resist the damp of the refrigerator or freezer room, make sure it is working in a safe and consistent manner