Kemp USA 10-536 Infrared No-Touch Thermometer is for all ages and gives accurate and instant temperature readings. This Digital Thermometer has an LCD Display & Memory log. Easy-to-use (4) simple steps for using this non-contact Forehead Thermometer 1). Take out the thermometer and open the battery lid to install two AAA batteries (Not included). 2). Keep distance at 1cm to 5 cm from thermometer probe to the middle of the forehead. (do not contact forehead directly). 3). Select measurement mode and click the measurement button to start taking temperature 4). Reading displays on the screen after successful measurement. Automatic record last 6 readings in order to track your body change. Less than two seconds read-out time and has Fahrenheit and Celsius mode options.