High Quality Unit A very unique digital temperature meter with a 3.3 ft cable and remote temp sensor probe. Ideal for seeing temperature in cars, aquariums, pet habitats, HVAC air ducts, computer towers and CPU temp, reading temperature inside or outside the home, test equipment, farms, pools , jacuzzi, see outside air or water temperature in automobiles, vans, trucks, RVs and boats. The unit has a great professional look when flush or surface mounted onto any surface. Fahrenheit to Celcius Selector Switch located on the back of unit. Auto updates the temperature reading every 2.5 seconds. The temp sensor probe is rustproof because its made of 100% stainless steel. It has a backlight. Specification Temp. range: -58F ~ +230F (-50C ~ +110C) Accuracy: +/-1Degree Wide working voltage: DC4-25V or USB 5V Sensor: NTC, 10k, B=3435K, Cord length: 3.3ft(1M) Warning: Please do not put in any corrosive liquid.