[Large LCD Screen and Waterproof Function] - You can read the measurement results at a glance thanks to the large, easy-to-read LCD screen. This is very helpful for people with impaired vision. The IPX3 waterproof design can withstand the humidity of the refrigerator or freezer, ensuring safe and consistent operation. [Record Lowest and Highest Temperatures] - Provides historical temperature readings. With this function, you can easily monitor temperature changes in the refrigerator and protect food safety in two ways. [Simple and Smart Operation] - Only 3 buttons are needed to easily operate the thermometer. Just press the power button to turn the thermometer on/off. Press the °C/°F button to select Celsius/Fahrenheit. Press the CLR button to clear the max/min readings. Restart the thermometer, and the max/min readings will be reset. [2 Portable Placement Methods] - You can place the stand on your desk, or you can flip it over and hang it on the refrigerator shelf with the 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 user-friendly digital freezer thermometer is the perfect assistant for food preservation! High/low temperature recording. Large, clear LCD screen. IPX3 waterproof. Place it on the side or attach it. 3 simple buttons. °C/°F switch. Suitable for freezers, refrigerators, homes, restaurants, bars, cafes, etc. Specifications: Temperature range: -20°C-50°C / -4°F-122°F Accuracy: ±1°C / ±2°F Resolution: 0.1°C / 0.2°F Waterproof rating: IPX3 Operating voltage: 1 x 3V CR2032 battery Size: 8.7 x 1.2 x 4.5 cm / 3.4 x 0.5 x 1.8 inches Weight: 45.4 g How to change the battery: If the reading becomes irregular or the screen clarity decreases, change the battery. Open the screws and the ABS casing, then replace the CR2032 battery with a new one. Note: Restart the thermometer, and the max/min temperature will be reset. After receiving an error message, please restart it. Package includes: 1 x User Manual 1 x Digital Refrigerator Thermometer (battery not included)