WINGONEER Digital LCD Thermometer Temperature Monitor with External Probe for Fridge Freezer Refrigerator Aquarium -Black Modeling simple, elegant, LCD display, moisture-resistant, strong anti-interference, applies to refrigerated cabinets, display counters and other needs of temperature measurement Temperature range: -50~ +110C Usage temperature: -10C ~ +50C Temperature measurement accuracy: 1C Cable length: 100cm; Power: 2  1.5v LR44 button cell batteries (included),