Infrared Forehead Thermometer measures thermal radiation (infrared) emitted from ear and forehead to infer body temperature Specifications :-Description : Non-Contact Infrared Forehead Thermometer. Display : Large LCD 38 X 28 mmMeasuring Localization : Forehead and Object SurfaceMeasurement Range : Body mode 32.0°C ~43.0°C (89.6°F~109.4°F) Object mode 0.0~100.0°C  (32.0°F~212.0°F);Temperature Unit : °C/°F (C & F Switchable)Display Resolution : 0.1°C/0.1°FAccuracy : ±0.2°C/±0.4°F (witin 36.0°C~39.0°C / 96.8°F~102.2°F)Automatic Power Off : In 1 minuteBattery Life : Could be used for 500 times for normal condition Storage Environment : Temperature  : -20°C~+55°C / -4.0°F~+122.0°FHumidity : 15% ~95% RHAvoid crash, sun burn or rain during transportation  Multiple Function : Body TemperatureRoom TemperatureObject Temperature2) Three Color Backlight (Color Alarm) :Green Backlight for Normal TemperatureYellow Backlight for Minor Temperature Red Backlight for High Temperature Japanese Lens Measuring Range : 10-50 mm Precision : Quick and Accurate C and F Switchable7) ROHS Compliant Automatic Shut off Buzzer : On / Off. Last Body Temperature MemoryContents with Product1 x Thermometer Box2 x "AAA" Battery1 x Instruction Manual1 x Storage Pouch