Non-contact infrared thermometer is a kind of thermometer that determines the surface temperature by measuring the infrared energy radiated from the target surface. Non-contact infrared thermometers for animals do not belong to medical devices. Medical devices refer to medical devices used to treat human diseases and relieve pain. Non-contact infrared thermometers for human body belong to medical devices and can only be produced after being registered by the Food and Drug Administration. Non-contact infrared thermometers for animals do not belong to medical devices, and can only be produced after being filed by the Technical Supervision Bureau.