Avoid cross-infection, no contact, thereby greatly reducing the risk of being tested and the operator being infected by bacterial viruses. Simple operation, sensing temperature changes, non-contact infrared measurement, sensitive induction, no need to wait, accurate measurement. Independent research and development of infrared module, the measurement value is accurate to ± 0.2 ℃, the temperature measurement is stable, fast and accurate, and the strong environmental temperature adaptability. Supports automatic shutdown, and two battery cases can be used continuously for more than 3000 times.