Description : -55 ~ 125 Degree Red LED Digital Temperature Meter Sensor It could be used in many harsh application， such as refrigerator， air-conditioner， aquarium and so on. With DC7-30V power range， you could power it with 12V DC. When out of range， the meter will display E2. This Thermometer could only display the temperature in \u2103. Specifications : Power Supply Voltage : DC7-30V(with anti-reverse protection) Measuring Temperature : -55\u2103 to 125\u2103 Units of Measurement : \u2103 Display Color : Red Display : Three 0.56 Inch LED digital tube Refresh Rate : About 300mS\/ times Minimum Input : -55\u2103 Maximum Input : 125\u2103 Accuracy : About 0.2\u2103 Overload : Please do not higher than 150\u2103 Operating Temperature : -40\u2103-85\u2103 Sensor : DS18B20， stainless steel sheath package， waterproof， anti-corrosion， high temperature Display Dimensions : Approx. 4.8 x 3 x 2.4cm\/ 1.89 x 1.18 x 0.94 Inch Length of Sensor : 1m\/ 39.37 inch Probes Dimensions : Approx. 2.3 x 0.6 cm\/ 0.91 x 0.24 inch(LxD) Package included : 1 x -55 ~125 Degree LED Thermometer Meter Details pictures :