Specifications: Dimensions : 33mm x 24mm x 17.5mm Installation dimensions: 30mm x 21mm Sensor cable length: 3 meters Power Supply voltage: DC 7-30V ( with anti-reverse protection ) Measuring temperature: -55 to 125°c Units of measurement: " °c " Display color: Yellow Display: three 0.36 "LED digital tube Refresh rate: about 300mS / times Minimum input: -55 °c Maximum Input: 125 °c Accuracy: about 0.2 °c Overload: please do not higher than 150 °c Overrange display: "E2" Operating temperature: -40 °c -85 °c Sensor: DS18B20, Stainless steel sheath package, waterproof, anti-corrosion, high temperature Usage: (1) Cars inside/outside temperature measurement (2) Air-conditioned room inside/outside temperature measurement (3) Refrigerator inside/outside temperature measurement (4) Pond/Aquarium water temperature measurement (5) Baby bath water temperature measurement (5) Body temperature measurement Package Included: 1x Digital Thermometer