BLUETOOTH TECHNOLOGY This infrared thermometer includes a Bluetooth feature that allows you to connect to our iOS or Android app. The data displayed by the forehead thermometer will be displayed in the software synchronously and automatically saved.ADVANCED TECHNOLOGY Our thermometer can be powered by a rechargeable battery or with a USB-C charging cord. The and modes of this infrared thermometer for humans are easily switchable. The latest sensor design decreases temperature measurement time to only 1 second. Please read the included introduction Manual.QUICK and ACCURATE - Our wall-mounted thermometer for adults automatically measures body temperature in less than a second using rapid measurement technology. Body temperature is detected within 2-4 inches from the wall thermometer. The measurement accuracy is controlled at 0.4 / 0.2. A flashing red light and the audible alarm indicate that the person has a high temperature.HANDS-FREE NON-CONTACT The touchless thermometer allows for contactless temperature readings and does not need to be held or operated by a human. The high-definition display has up to 15 feet viewing distance. The device can be hung onto a wall using nails, hooks, brackets, or the included double-sided adhesive tape. It can also be mounted on Tripod Stand for easy portability (sold separately).WIDELY USED This Infrared Forehead Wall Mounted Thermometer is ideal for public or private settings: business, offices, restaurants, bars, home, bus stations, airports, schools, cinemas, hospitals, supermarkets, subways, and any public places especially in a community entrance. With its fast response time of only 1 second, it reduces crowd queue time.