Features:1. Waterproof Style: Waterproof structure to resist moisture in the refrigerator or freezer, more durable and safe2. Easy to Operate: Simply press "°C/°F" to convert between Celsius and Fahrenheit units3. "Frost Alarm" is displayed when the temperature is 4°C to 7.9°C4. Easy to Read: The LCD panel is large enough for you to read clearly from a distance 5.Frost Warning: Frost warning range: 4.0°C to 7.9°C6. When operating within this range, the frost icon will be indicated on the screenSpecifications:Measuring Temperature: -20°C to 60°CAccuracy: ±1°C / ±2°FResolution: 0.1°C / 0.2°FWaterproof Rating: IPX3Battery: 1 x CR2032 Battery, 3V (Included)CE Safety Mark