Package includes: you will receive 3 pieces of digital refrigerator thermometers, conveniently for you to use and monitor your refrigerator temperature, stand for shelf or hang with hook, can be daily or specified application Clear to read: each of digital refrigerator freezer thermometers has a big and clear digital LCD screen, the display provide large reading room, you can get the measurements very quickly at a glance Better temperature monitor: there is a function of recording minimum and maximum temperature on the waterproof temperature thermometer, provides you with the historical temperatures readings, so that the temperature change of your refrigerator can be easily monitored, ensure a double protection of your food safety Wide range and accurate reading: our digital refrigerator freezer thermometer can read temperature ranges from -20/ -4 to 50/ 122, with the accuracy of 1C/ 2F and resolution of 0.1/ 0.2, use this digital thermometer in your refrigerators, freezers, fridge rooms or general rooms for food safety or other applications Easy to use: the large display thermometers are all equipped with foldable hooks, you can hang them in refrigerator or freezer rack, or just stand them there on shelves or other flat surfaces, very compact and convenient to keep Features: Clear to read: Each of digital refrigerator freezer thermometers has a big and clear digital LCD screen, the display provide large reading display, you can get the measurements very quickly at a glance. Easy to use: The large display thermometers are all equipped with foldable hooks, you can hang them in refrigerator or freezer rack, or just stand them there on shelves or other flat surfaces, very compact and convenient to keep. Specifications: Size: 3.5 x 1.7 x 0.5 inch/ 8.8 x 4.5 x 1.3 cm Minimum temperature display: -20 Celsius degree/ -4 Fahrenheit Maximum temperature display: 50 Celsius degree/ 122 Fahrenheit Accuracy: 1 Celsius degree/ 2 Fahrenheit Resolution: 0.1 Celsius degree/ 0.2 Fahrenheit Color: white Material: ABS, stainless steel Note: Replace the battery if the reading becomes erratic or the display clarity fades. Open the screw and the ABS shell, and replace with a new CR2032 battery.