This document introduces the usage instructions and features of the Radiant Innovation TH-109 infrared one-second ear thermometer. This ear thermometer has an automatic temperature difference correction function, which can accurately measure body temperature in environments with large temperature differences. The ear thermometer can accurately reflect the body's core temperature and is suitable for the whole family to use. The ear thermometer can measure body temperature ranging from 34℃ to 42.2℃ and has a built-in fever warning function.
This manual provides step‑by‑step instructions for using the Radiant TH‑109 infrared ear thermometer, including how to turn the device on, take a temperature reading, and interpret the results. Safety warnings, cleaning procedures, and battery replacement instructions are also covered.
Technical specifications such as the measurement range, operating temperature limits, and required battery type are listed, along with compliance information for medical device standards. The document is written in Chinese and is intended for end‑users and healthcare professionals.