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parameters: Power Supply voltage: DC 7-30V (with anti-reverse protection) Display color: green Display: three 0.36 "LED digital tube Measuring temperature: -55 to 125°C Minimum input: -55 °C Maximum Input: 125°C Accuracy: about 0.2 °C Measurement accuracy:0.06°C Refresh rate: about 300mS / times Operating temperature: -40 ° -85 °C Overload: please do not higher than 150 °C Overrange display: "E2" Sensor cable length: 1 meters Dimensions : 33mm x 24mm x 17.5mm Installation dimensions: 30mm x 21mm feature: with software filtering function, the numbers do not shake with anti-reverse protection,meaning it will not burn when reverse Digital displays use a highlight of imported die, high brightness, long service life with two grade regulator chips,wide voltage power supply 7-30V , stable working Sensor: DS18B20, Stainless steel sheath package, waterproof, anti-corrosion, high temperature Usage: 1. Body temperature measurement 2.Baby bath water temperature measurement 3.Cars inside/outside temperature measurement 4.Pond/Aquarium water temperature measurement 5.Refrigerator inside/outside temperature measurement 6.Air-conditioned room inside/outside temperature measurement Package Included: 1x Digital Thermometer