Abstract: A temperature sensing system for refrigeration and related methodology. The system has a refrigeration unit containing one or more food products, a temperature sensor disposed in the refrigeration unit. The temperature sensor is in communication with a remote computing device that is configured to calculate thermal data pertaining to said one or more food products. The remote computing device in communication with a temperature monitor that receives real-time temperature information from the temperature sensor. The monitor includes an alarm function that is activated if temperature inside said refrigeration unit causes a rise of the actual product temperature above a specified threshold such as 41° F. while noting the time remaining to return the product temperature to a safe level within the government specified 4 hour limit.