The Roundup AJ Antunes 7000135 Hi-Limit Thermostat Kit is a temperature control assembly with a reset function located under the cap. It monitors heat levels in compatible food warming equipment and switches the heating circuit according to the operating temperature. The kit measures approximately 4 inches in length, 1.5 inches in width, and 2.3 inches in height. It is listed for Roundup DFWT-100, DFWT-150, and DFWT-200 models. This thermostat kit can be referenced when an existing high-limit control develops inconsistent temperature response, frequent trips, or reset problems. The identification provides a clear reference when checking the required thermostat assembly for equipment service.