[Large LCD display and waterproof function] -You can read the measurement results at a glance with the large easy-to-read LCD display It is a good helper for people who don't have the best vision IPX3 waterproof structure can withstand the humidity of refrigerator or freezer, please assert that it works safely and consistently [Record the temperature the lowest and highest] -Provide Historical Temperature Readings With this function, you can easily monitor temperature changes in the refrigerator and protect food safety in two ways [Simple operation and smart] -Only 3 buttons are needed to operate the thermometer easily Just press the on/off button to turn on/off the thermometer Press the C/F button to select / Press the key CLR to delete / Re records start the thermometer and the maximum/minimum record will be reset. the refrigerator shelf with a hook The mini design does not take up too much space in the refrigerator It is very compact and easy to carry. [Temperature range and accuracy] Temperature range -20 50 (-4122), high accuracy (1C / 2F You can use it in refrigerators, freezers or as an indoor thermometer to ensurer food safety or indoors. 'other purposes The digital freezer thermometer with user-friendly design, the perfect assistant for food protection Highest / lowest temperature record Large, clear LCD screen IPX3 waterproof Lay it aside or dock it 3 simple buttons C / F switch Suitable for freezing atorsrefrigeratorshomes Temperature range-20C-50C / -4F-122 F 1C / 2F 0.1C / 0.2F IPX3 1*3V CR2032 Size8.7 x 1.2 x 4.5cm / 3.4 x 0.5 x 1.8inch Weight45 4g How to replace the battery: If Reading becomes unpredictable or display clarity decreases, replace the battery Open the screws and ABS case, then replace the CR2032 battery with a new one Restart the thermometer and the maximum / minimum temperature will be reset After receiving the error message, please restart it Package includes 1 x Instruction Manual 1 x Digital Fridge Thermometer