Refrigerator Freezer Fridge Thermometer, Digital Waterproof, Max Min Record Function Perfect Design:MAX/MIN/IMMEDIATE Fridge Thermometer,C/F switch for your selection IPX3 Waterproof structure, Durable and Safety Easy Installtion with a hook,it has a hook on the back,put on desktop or hang on fridge as per your acquirement Easy operation with 3 buttons,ON,OFF, C/F( Transfer C/F button to select Centigrade or Fahrenheit) Temperature range: -4F to 122F(-20C to 50C). Accuracy: 2F(1C),can be treated as a general thermometer for indoor or outdoor use