FOREHEAD MODE Touchless thermometer for adults and kids use advanced infrared technology to ensure that you can measure without contact. EAR MODE The ear canal mode with high precision probe, have a fast and responsive in-ear measurement and can reflect core temperature. MUTE&UN-MUTE MODE Under the mute function, the digital thermometer can keep quiet at night and clearly read temperature with the large backlight LCD display. INSTANT READING The infrared thermometer can quickly and instantly get measurement results FOUR COLORS DISPLAY Blue : power on & stand by Green :32~37.5 Orange :37.6~38 Red :38.1~42.9 TEMPERATURE UNIT CONVERSION Support / conversion. You can easily change the temperature unit with one button.