3 Backlight Colors In the surface mode of the contactless clinical thermometer, it always stays green. In body mode: Green: 86.0 to 99.3(32.0 to 37.4); Orange: 99.5 to 100.2(37.5 to 37.9); Red: 100.4 to 109.4(38.0 to 43.0) Measurement modesThe infrared clinical thermometer can measure the body temperature or the temperature of an area. an object. a food. a liquid such as: Measure baby milk or a room. Measuring range:For forehead temperature: 89.6-109.4(32.0-43.0). For object surface temperature: 32-212(0 - 100) The forehead clinical thermometer is easy to use. for body and object it is also suitable. Accurate and instant measurementPress the trigger of the forehead clinical thermometer. The temperature is displayed immediately. and accompanied by a beep. When measuring in the range of 3cm to 5cm with adult and child digital clinical thermometer. without touching the skin. You can quickly and accurately read the temperature value within 1 second with an accuracy range of 1F / 0.5C. Automatic data storageTemperatures are displayed in the right corner of the LCD. Press the UP or DOWN button. to view the most recent temperature readings. The medical clinical thermometer switches off automatically after 15 seconds of non-use. Our clinical thermometer can also store 99 measurement data.