Features: 1.Digital thermometer allows you to closely monitor the right temperature of fish tank or refrigerator. 2.This thermometera with a digital screen that displays reading in both Fahrenheit and Celsius. 3.The refrigerator thermometer can be turned off by click the switch button to save electricity, easy to operate. 4.With magnets and hooks on the back of the product and the magnets can adsorb on the iron covers. 5.This temperature gauge can be used for both fish tank and refrigerator with accuracy measurement. Specification: Condition: 100% Brand New_x005F_x000D_ Item Type: Thermometer_x005F_x000D_ Material: Plastic_x005F_x000D_ Color: As Picture Shown_x005F_x000D_ Product Length Without Hook: Approx. 6.8cm/2.7in_x005F_x000D_ Product Width Without Hook : Approx. 4.3cm/1.7in_x005F_x000D_ Product Thickness Without Hook: Approx. 2.5cm/1.0in_x005F_x000D_ Product Length With Hook: Approx. 6.8cm/2.7in_x005F_x000D_ Product Width With Hook : Approx. 6.1cm/2.4in_x005F_x000D_ Product Thickness With Hook: Approx. 1.4cm/0.6in_x005F_x000D_ Weight: Approx. 40.0g/1.4oz_x005F_x000D_ Battery Type: 200mAh Button Battey(Ship with Battery)_x005F_x000D_ Battery Model: CR2030_x005F_x000D_ _x005F_x000D_ When the temperature is lower than -20, it will display: "LL.L"_x005F_x000D_ Suitable Type: Aquarium, Refrigerator, etc._x005F_x000D_ Product Function: Used for temperature monitoring_x005F_x000D_ 1. Temperature Range: -20~60 (-4F~140F)_x005F_x000D_ 2. ON/OFF (Electrical on/off function switch button)_x005F_x000D_ 3. /F (Electrical Celsius/Fahrenheit function switch button, default Celsius, you can contact customer service to customize the default Fahrenheit)_x005F_x000D_ When the temperature is higher than 60C, it will display: "HH.H"_x005F_x000D_ 2. Frost Alarm:_x005F_x000D_ When the temperature is within the range of 4.0C (39.2F) to 7.9C (46.2F), the snowflake icon will appear on the screen._x005F_x000D_ 3. Operation Instructions:_x005F_x000D_ The refrigerator thermometer can be turned off by the switch button to save electricity._x005F_x000D_ Fahrenheit and Celsius key conversion._x005F_x000D_ With magnets and hooks on the back of the product, the magnets can adsorb the iron cover PackageList: 1 x_x005F_x000D_ _x005F_x000D_ Thermometer