Features:Non-contact Design: This wall-mounted infrared thermometer is touchless with a 5cm-10cm(2.0in-3.9in) test distance from forehead. When approach the thermometer, the reading will automatically appear on the screenquickly.Accurate and Quick Measurement: With infrared technology, it quickly scans and measures the temperature of the forehead in 0.5S. Precise and reliable reading with accuracy up to +/-0.2��/0.4�H.Flexible Use: It can be installed through nail hook, traceless hook or bracket fixing as you desired, suitable for school, office, supermarket, etc.Intelligent Temperature Warning: Whenthe temperature is 35��/95�H, it alarms Di and displays Lo and green light.35-37��/95-98.6�H, it flashes green lights and alarms Di .37��- 38��/98.6-100.4�H, it alarms Di Di.38��- 42��/100.4-107.6�H, it alarms Di Di Di.42��/107.6�H, it alarms Di Di Diand displays Hi and red light.Complete Features: This thermometer supports mode switching. For your convenience, the tested temperature can be displayed in either Celsius and Fahrenheit. Also object mode and body mode are provided.