DROKxae; 0.36" Car Digital Panel Thermometer Temperature Measurement -55-125&deg;c Guage Measuring temperature: -55 to 125 c Power Supply voltage: DC 7-28V Display: three 0.36 " Red LED digital tube; Sensor: DS18B20;cable lengthabout 1meter Digital Tube Size: 22.5mm x 14mm x 9mm;Circuit Board Size: 26mm x 17mm Measurements:Car/Room/Refrigerator inside and outside temperature;Fish Aquarium Water temperature