This product is a clamp-on thermocouple sensor specially developed for the refrigeration industry, particularly suitable for the R&D, quality inspection, and performance testing of household appliances such as refrigerators and freezers. It can be quickly and firmly clamped on the surfaces of components including compressor pipelines, suction and discharge pipes, evaporators, or condensers, enabling real-time and accurate monitoring of temperature changes. It provides key measured data for analyzing refrigeration system performance, optimizing control logic, and diagnosing faults.