Description : - Non - contact infrared forehead thermometer , can be detected within 3 - 5cm measurement distance , safer and healthier . In 1 Seconds Reading for body , Accurate to within 0 . 1 . - High - precision infrared sensor with stable and reliable performance ; Strong adaptability to ambient temperature , can still be used normally in complex environments . - Automatically save the last measured value . - It can be switched from Celsius to Fahrenheit at will . - One - button measurement , easy to operate , both elderly and children can use it . - Large - size LCD screen , high - brightness backlight . Specification : Material : ABS Plastic Size : 15 . 4x3 . 9x10 . 3cm / 50 . 53x12 . 80x33 . 79inch Effective distance : 3 - 5cm Accuracy : 0 . 1 Required 2x AAA Battery ( Not Included ) Main Color : White Operating environment : 16 - 40 ( 60 . 8 F - 104 F ) Measure Range : 32 ~ 42 . 9 ( 89 . 6 F - 109 . 2 F Package Includes : 1 Piece Infrared Forehead Thermometer 1 Piece Manual Note : 1 . Please keep the inner cavity of the sensor and probe clean , otherwise it will affect the measurement accuracy . 2 . Before using , please read this instruction manual carefully and make sure the battery is installed . 3 . It is forbidden to immerse the thermometer in any liquid , and it is forbidden to be placed in an excessively high or low temperature environment for along time . 4 . It is forbidden to collide , drop or mix with sharp objects , and it is forbidden to disassemble by yourself . 5 . Do not use the thermometer in the sun or water .