Description: Convenient and fast temperature measurement in 0.1 seconds when up to 15cm away from the thermometer, with the accuracy tolerance being 0.2C. Convenient- Wall-mounted thermometers is smart and convenient and avoid the possibility of cross- via hand-held body temperature meassurement. It can switch between Fahrenheit and Celsius measurement with one click, which is very convenient. Can be applied in different occasions. Office/ Subway/ Family/ Superstore/ Shop/ Community/ Entrance etc. Noncontact infrared technology reads from forehead, prevents cross- between multiple people, fast and accurate temperature measurement. Specification: Maximum error: 0.2C Measurement environment: 0C~42C Measuring distance: 5cm~15cm Power supply: 3 AA batteries (Not Included) / Type-C (DC 5V 1A) Size: 124x86x38mm / 4.88x3.38x1.49inch Package Includes: 1 Piece Wall Mounted Thermometer 1 Piece USB Cable 1 Piece Manual 1 Pack Mounting Nail Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!