1、This thermometer can accurately measure a person's body temperature in one second, without manual operation. 2、Supports non‑contact measurement, which can identify high temperature individuals without physical contact. 3、Can quickly test a large number of people, very suitable for use in high population density areas. 4、Green screen shows that the temperature is within normal range, and red screen and sound alarm show that the body temperature is too high. 5、Can be placed in offices, supermarkets, shops, restaurants, apartments, hotels, stations, community centers and other places. 1 x Thermometer (Battery Not Included)4 x Expansion Nail4 x Screw1 x USB Cable1 x Manual Condition: 100% Brand NewItem Type: ThermometerMaterial: ABSVoltage: 5VMeasurement Method: Infrared InductionSensing Distance: 8cm / 3.1inMeasuring Range: 0-50℃Accuracy: ± 0.2℃ ( 0.4℉)Working Conditions Temperature: 15℃- 42.9℃ ( 85.9℉- 109.2℉)Memory: 100 GroupsTemperature Unit: ℃, ℉Automatic Standby Time: 20SMeasuring Time: 1SPower Supply Mode: USB Power Supply or 2 x AAA Battery (Battery Not Included)LCD Screen Light Color: 35.0- 37.0℃ Green 37.6- 38.0℃ Orange 38.1- 42.9℃ RedWeight: Approx. 260g / 9.2ozSize: Approx. 17x10x3cm / 6.7x 3.9x 1.2in