Non-contact and fast measurement: Forehead thermometer can measure temperature in 1 second without physical contact. The infrared thermometer adopts one-button measurement design, which is quick and convenient. 3 in 1 Mode: The forehead thermometer has three modes: ear, forehead, object. Besides measuring human body temperature, we can also measure ambient temperature, water temperature or object. Multi-functional adult thermometer can meet your different needs. Audible and visual fever warning: The infrared thermometer has an audible alarm, it will remind you when the temperature is abnormal. Forehead medical thermometer uses four-color backlight design, which allows you to see the value in any light. The screen will display different colors depending on the measured temperature range. Accurate and reliable: Patented technology allows separate measurement of adults and children. (Only switch between adult / child mode), the measurement results are more accurate. You can also switch between Celsius / Fahrenheit modes according to your needs. Memory Function and Auto Power Off: Forehead medical thermometer has memory function and can store 40 sets of temperature data, which can help you record better. The infrared thermometer will automatically turn off after 10 seconds of inactivity, saving energy. Product Description 3 in 1 Infrared Forehead Thermometer Technical specifications Display: Segmented LCD, four-color LED backlight (white, green, orange, red) Temperature units: C / F, switchable Power source: DC 3V, AAAX2 Battery: 2*AAA, can be used more than 3000 times Weight & Dimension: 80g (with battery), 143x35x41mm Measuring range: Forehead and ear: 32.0C-42.9C (89.6F-109.2F) Object: 0C-100C (32F-199F) The non-contact thermometer has 3 modes, forehead/ears/object mode. The patented technology allows separate measurement of adults and children. You can also switch between Celsius / Fahrenheit modes according to your needs. The forehead thermometer has a memory function and can store 40 sets of temperature data, which can help you record better. Steps of use: Step 1: Install 2 batteries (AAA*2). Step 2: Press the measurement button for one second to turn on. Step 3: Press the mode button to change the temperature measurement mode. Step 4: Press the measurement button for 1 second to quickly measure.