✓?What’s In The Box?AILE Digital ThermometerGun, written manual (in English), 30-day moneyback guarantee and an industry-leading 3-year warranty, plus lifetime technical support Please note that 2 x AAA batteries are required and are not included. ✓?High temperature/ fever warnings?If the thermometer gun registers a temperature reading that exceeds 38 degrees Celcius (100F), the digital thermometer will automatically sound an alarm and the screen will change colour to warn you Readings are accurate to within 0.3 degrees Celcius, so a high temperature warning is likely accurate the first time. ✓?Clear 1.45”Screen Display?AILE infrared thermometers incorporate a 1.45 inch screen display that also has a backlit function, for clear readings even in strong light or dark places. Readings are instant and mute mode can be set if desired, so as not to awaken sleeping babies or to disturb resting patients, for example;. ✓?CE/ ISO Approved?AILE thermometer is CE & ISO certified. It incorporates unique algorithms and chips and can display readings in either Celcius or Fahrenheit.Simply position the sensor at the tip of the gun approximately 1-3cm from your forehead, pull the trigger and a beep will inform you that the reading has been taken. The device automatically calibrates to its target; manual calibration is not required at any stage. ✓?Accurate and Reliable?The AILE Infrared Forehead Thermometer incorporates an optimised algorithm to ensure excellent performance. The advanced micro controller chip and premium infrared sensor ensure remarkable accuracy levelsThe device has a lifetime expectamcy of five years/ 40,000 accurate measurements and has been rigorously tested to these levels.