This is a non-contact industrial thermometer. Insert the batteries and press the button to measure the temperature in about 1 second. We will ship after confirming the operation. Batteries are not included. Product Details ◆ Size: 122x29x23 (mm) ◆ Temperature measurement accuracy: Accuracy ±0.2℃ (32~42.9℃) ◆ Display: LCD digital ◆ Measurement distance: 1~5cm ◆ Operating temperature: 15℃~40℃ (recommended 15℃~35℃) ◆ Measurement time: Approximately 1 second ◆ Country of origin: China You can switch between Fahrenheit and Celsius displays. ※ This device is a "household appliance" that measures the surface temperature of objects. ※ If Celsius/Fahrenheit is accidentally switched, it can be switched by pressing and holding the button while the power is off. ※ The box is included and has instructions, but they are in English. ※ There may be dents or tears in the box.