This classification covers various temperature sensors used for temperature monitoring and control in manufacturing sites. It includes thermocouples (K-type, J-type, T-type), resistance temperature detectors (Pt100, Pt1000), thermistors, infrared temperature sensors, and semiconductor temperature sensors. These are essential for quality control and safety assurance in manufacturing processes such as spindle temperature monitoring in processing machinery, furnace temperature control, mold temperature management, cutting fluid temperature measurement, and temperature control during resin molding. This category is distinguished from temperature meters and temperature converters, focusing specifically on sensor elements themselves.