Easy to use - [Updated] A refrigerator thermometer with only two buttons. Press and hold the C/F button to turn the thermometer on or off. Simply press the button to toggle the temperature between Celsius or Fahrenheit. Max/Min key to determine 24 hour Max/Min display. Large digital display - Just one glance from the room and you can easily read the display with its large bold digits . Ideal for visually impaired people. This means you can use this device in the fridge, freezer or as a room thermometer. Three different placement options - magnetic stick, stand and hook for hanging, or attach to fridge door with the back magnet, either use the stand to put it on the table, and finally you can flip the stand and use the hook to hang on a refrigerator shelf or your freezer. wide temperature range - from -20/-4 to 60/140. If it is lower than -30/-22, "LL.L" is displayed, if it is higher than 60/140", "HH.H" is displayed. Reminder - frost warning 4 to 7.9, frost symbol will be displayed on the screen if it is within this limit. Built-in battery and full instructions.Basic information: 1. Accuracy: 1(2); 2. Weight: 1.9 ounces / 54 grams; 3. Size: 2.64*0.9*0.39"/6.7*2.5*1cm; 4. Power supply: 1 * 3V CR2032 button battery (included); 5. Measurement temperature range: -20~60/-4~140 Main Functions: 1. A fridge thermometer with just two buttons. Press and hold the C/F button to turn the thermometer on or off. Simply press the button to toggle the temperature between Celsius or Fahrenheit. Max/Min key to determine Max/Min display of 24 hours. 2. Large Digital Display - One glance from the room and you can easily read the screen with its large, bold digits. Ideal for visually impaired people. This allows you to use this device in the fridge, freezer or as a room thermometer. 3. Three different placement options - magnetic bar, stand and hanging hook, attach it to the refrigerator door with the back magnet or use the stand to place it on the table, and finally you can flip the stand and use the hook to hang it in a refrigerator compartment or in your freezer. 4. Wide temperature range - from -20/-4 to 60/140. If it is lower than -30/-22 "LL.L" is displayed, if it is higher than 60/140 "HH.H" is displayed 5. Remember - Freeze warning 4 to 7.9, freeze symbol will be displayed on screen if within this limit. Built-in battery and full instructions. Package Included: 1 x Freezing Thermometer; 1 x User Manual Note : 1. Use it under the guidance of its manual; 2. The thermal reaction takes about one minute;