Large LCD Screen & Waterproof Function: - You can read the measurement results at a glance thanks to the large, easy-to-read LCD screen. It is a good helper for people who do not have the best vision. The IPX3 waterproof structure can withstand the humidity of the refrigerator or freezer, please ensure that it works safely and consistently. Record the lowest and highest temperature: - Provide historical temperature readings. With this function, you can easily monitor the temperature changes in the refrigerator and protect food safety in two ways. Simple and Smart Operation: - Only 3 buttons are needed to operate the thermometer easily. Simply press the on/off button to turn the thermometer on/off. Press the C/F button to select Celsius/Fahrenheit. Press the CLR button to delete the maximum/minimum records. Restart the thermometer and the maximum/minimum record will be reset. 2 Portable Placement Methods: -You can place the stand on the desktop, or you can turn the stand over and hang it on 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 (-4 122 ), high accuracy ( 1 C / 2 F). You can use it in refrigerators, freezers or as an indoor thermometer to ensure food safety or for other purposes. The digital freezer thermometer with user-friendly design, the perfect assistant for food preservation! Highest / Lowest Temperature Record Large and clear LCD display IPX3 waterproof Put it aside or connect it 3 simple buttons C / F switch Suitable for freezers, refrigerators, homes, restaurants, bars, cafes, etc. Specifications: Temperature Range: -20C-50C / -4F-122F Accuracy: 1C / 2F Resolution: 0.1C / 0.2F Waterproof Structure: IPX3 Grade Working Voltage: 1 * 3V CR2032 Battery Size: 8.7 x 1.2 x 4.5cm / 3.4 x 0.5 x 1.8in Weight: 45.4g How to Replace the Battery: If the reading becomes unpredictable or the display clarity decreases, replace the battery. Open the screws and ABS case, then replace the CR2032 battery with a new one. Note: 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 Refrigerator Thermometer (without battery) Shop Tips: 1. The size is manually measured, please allow the error (1-3 cm). 2. Due to the different monitor pixels, there may be some color difference, please refer to the actual product.