New-Refrigerator Digital Kitchen Wireless Fridge Freezer Temperature Features:Big Digits LCD Screen- Easy for us to read electronic LCD display. The information on the screen can tell us the max, min and the current temperature at the same time. You can learn the accurate temperature of your freezer room all the time. Wide Range & Accurate- The temperature can range from -4F to 122F (-20C to 50 C) and it is accurate. Allowing you to use this in the fridge or freezer. it can the role of general for indoor or outdoor. Adjustable bracket- You have different choices for placing this indoor. Can be hung, flat, and tilted to the space occupied by the refrigerator Simple & Intelligent Operation- There are 3 buttons electronic. Just press the on or off button to the on/ off. Press C/ F button to select centigrade or. Once you the, the max/ min temperature will be. Ipx3 Waterproof- structure (waterproof level IPX3) can resist the damp of the refrigerator or freezer room, making sure that it is working in a safe and consistent manner. Specification : Dimensions:87x61x25MM Measurement: C & F Minimum Temperature: -4F (-20) Maximum Temperature: +122C (50) Accuracy: 1C / 2F, please kindly note variation of 2C or 4F is within tolerance Button Display: ON / OFF C/F, CLEAR Package Contents: 1 x User Manual 1 x Refrigerator (Battery Included) Note: Press the CLR button, the MIN/MAX readings will be. Please it if you find inaccurate. How to replace the battery Replace the battery when the reading becomes erratic or the display fades. Open the screw and the ABS, and replace with a new CR2032 battery.