Features: Wide Application:This infrared thermometer is suitable for kids,adult,elder.Used in office, home, supermarket, restaurants,school and community entrance. Abnormal Temperature Alarm:If temperature exceeds normal value,The non-contact digital thermometer will make a sound “Di Di Di”that let you know whether has a fever. Language SwitchLong press the "memory"button, Switch the alarm audio language (Default is Chinese)."Memory Key":Press the "memory" button to light up,and check thetemperature record data by the left and right keys.Toggle Key:Short press to switch between Fahrenheit and Celsius. Voice broadcasting with 14 languages switchable, voice on/ off for selection, which is more convenient to use. Colorful screen display, large temperature digits for convenient reading. Easy to switch unit of / . The wall-mount non-contact infrared thermometer detects temperature within 1cm-10cm/1-4 inch distance from forehead,more healthy and safe. Note: Please long press and hold shutdown to save tested datas. Specification: Screen: LCD Digital Display Response time: 0.5s Testing Accuracy: ±0.2 degrees Charging Method: USB charging Infrared measuring range: 32~43/89.6109.4 Automatic alarm:“Di Di” sound. Automatic measurement: measuring distance 1cm-10cm/1-4 inch Power source: 2 * AAA B-atteries/1 * 18650 cell/ USB chargeing port(Not Provided the Batteries) Package Include: 1X Infrared Thermometer 1X User Manual