How to replace the battery:
Replace the battery when the reading becomes erratic or the display clarity fades. Open the screw and the ABS shell, and replace with a new CR2032 battery which you can easily get from store.

Notes:
* Press the CLR button, the MIN/MAX readings will be reset.
* Please reboot it if you find inaccurate info.

 Specification:
measuring temperature range: -20°C to 50°C/-4°F to 122°F
Accuracy: ±1°C/±2°F
resolution: 0.1°C/0.2°F
waterproof structure, level IPX3
operating voltage: 3V, CR2032 battery, 1PCS
Dimensions:8.7 X 1.2 X 4.5 cm/3.4 x 0.5 x 1.8 inch Weight: 45.4g

Package included:
1 X user manual
1 X Digital Refrigerator Thermometer (battery included)

• ☻ Waterproof design - Waterproof structure, level IPX3. Can resist the damp of the refrigerator or freezer room. More durable and safer.
• ☻ Simple to operate - Simple electronic thermometer with only 3 buttons. Just press the on/off button to switch the thermometer on/off. Press °C/°F button to select Centigrade or Fahrenheit. Press the CLR button to clear/reset the MIN/MAX readings.
• ☻ Easy to read display: Easy to read screen at a distance extra large digit displays temperature in Celsius and Fahrenheit with high accuracy (±1°C / ±2°F). The information on the screen can tell us the max, min and the current temperature at the same time
• ☻ Perfect for fridge - The temperature range from -4°F to 122°F(-20°C to 50°C). Accuracy: ±2°F(±1°C). Allowing you to use this in the fridge, freezer. It can also act the role of general thermometer for indoor or outdoor use.
• ☻ 2 setting ways - You have 2 different choices for placing this indoor thermometer. Either use the stand to place it on the table-top, or flip the stand over and use the hook to hang it on a refrigerator shelf. Mini design and won't take too much places of your fridge

☻ Waterproof design - Waterproof structure, level IPX3. Can resist the damp of the refrigerator or freezer room. More durable and safer.Sealands