Features: LCD Display. Insert design. Simple appearance. Two button batteries for longer use time. Especially applied in refrigerator, chiller, deepfreeze etc. To avoid food spoiling prematurely and keep it safe to eat. FDA recommends keeping your refrigerator at or below 40 degrees Fahrenheit. An easy-to-read extra-large LCD screen provides quick, at-a-glance measurements. Records Min and Max temperature provides the historical temperatures readings. Equipped with foldable hook, which can be used by hanging in refrigerator and freezer rack or free standing only. Allowing you to use this in the fridge, freezer. it can act the role of general thermometer for indoor or outdoor. Technical parameter: Digital LCD Fridge Thermometer, It only suitable for Fahrenheit,not for Celsius Temperature range: -50~ 230 Fahrenheit Temperature display resolution: 0.1 Probe wire: 1M Length Size: 47*28*14mm Using temperature: Temperature: -5 degree Fahrenheit ~ + 50 degree Fahrenheit; Humidity: 5% ~