Features: 0.1 second fast temperature measurement within 2-4 inches. Non-contact infrared measurement, while avoiding for cross infection. No need to hold, can be hung / double-sided adhesive tape / bracket fixed. A green light will indicate that their temperature is within a normal range, and a flashing red light and audible alarm will indicate that the person has a high temperature when the temperature is over high>37.5 or 99.5 . Accurate and fast temperature measurement, sub-zero temperature measurement, no need to wait, can display the ambient temperature, voice broadcast. An advanced infrared sensor chip with a tested 100,000 operating lifespan rapidly delivers accurate and precise temperature readings. is designed for people of all ages, including infants, children, adults, and seniors. High-definition display, Wall-Mounted Body Thermometer can be stationed in offices, supermarkets, shops, restaurants, apartments, hotels, train stations, community centers, and building entrances. It comes with a Type-C cable and needs to be kept plugged in. you do not need a battery. because if you stick it on the wall, it will be troublesome to replace the battery. If you want to use a battery, please buy a 18650 lithium battery by yourself(NOT INCLUDE). Specifications: Material: Plastic Size: 140x93x93mm/5.5x3.7x3.7 inches Temperature measurement time: 0.1s Measuring distance: 1-10cm Battery: 3.7V 18650 battery Charging current: for DC 5V/1A Warning: alarm light display and voice broadcast Language: Chinese, English, Korean and Italian Use ambient temperature: 10-40, relative humidity 85% Human body temperature measurement range: 10-42.9 Object temperature range: 0-60 Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Infrared Thermometer