Features: Temperature Reading: This thermometer displays the temperature in Celsius or Fahrenheit (press "setup" for 3 seconds to switch between Celsius and Fahrenheit). High-brightness LED backlight with 3 colors: green (normal temperature), blue (low fever), and red (high fever). Easy to Use: The LCD digital infrared forehead thermometer is very easy to use. Simply press the button to measure, and the temperature will be displayed in 1 second. The temperature can be read clearly even in the dark. Non-Contact Measurement: The non-contact digital infrared thermometer is safer. It measures body temperature without touching the forehead (measuring distance of 3 to 5 cm). Two Temperature Measurement Modes: This digital thermometer is suitable for adults, babies, children, and the elderly. Two temperature measurement modes: body mode (human body temperature) and object mode (water, milk, room temperature, etc.). Accurate Measurement: This forehead thermometer measures temperatures between 32.0 and 43C (89.6 and 109.4F), with a deviation of 0.2 degrees. It can store up to 32 measurements in memory for later reference. Please note the polarity of the 2 AAA batteries (not included): the inner terminal is positive and the outer terminal is negative. Specifications: Model: Digital Non-Contact Infrared Forehead Thermometer. Measurement Range: 32.0-42.5C (89.6-109.4F). Accuracy: 0.2C. Measurement Distance: 3-5 cm. Measurement Time: 1 s. Voltage: 3V DC. Battery: 2 AAA batteries (not included). Weight: 100 g. Package Includes: 1 Forehead Thermometer.