The Taylor Pro digital fridge/freezer thermometer is designed to help you reduce waste on two fronts - energy inefficiency and food spoilage. Its innovative patent pending design accurately monitors the internal temperature of either your fridge or freezer, while tracking minimum and maximum readings over time. If the readings fall outside of the safe zones for refrigerating or freezing, you'll easily be able to turn the temperature up or down appropriately, or identify an appliance fault. These features make it easy to ensure your appliance is set to the optimal temperature for safe food storage, but without unnecessarily wasting electricity. Reading these temperatures is simple too. The freezer / fridge thermometer features a big LCD screen, which accurately displays temperatures from -20°C to 60°C (-4°F to 140°F). With a hanging hook and a suction cup, it sits unobtrusively inside your fridge or freezer, so it won't get in your way at all. More Useful Info - Powered by 1 x CR2032 battery (included) - Includes a five-year guarantee.