A plug-and-play framework for an HVAC air-handling unit (AHU) control system is proposed in Part I of this work (Zhou and Nelson 2011). In Part II, a structural pattern recognition algorithm to automatically recognize temperature sensors is developed. A prototype of the framework was built and used in experiments designed to test the validity of the method for automatically recognizing the locations of temperature sensors in an AHU. The experiments demonstrated the ability of the prototype to successfully identify the location of each of eleven temperature sensors located at various positions in an AHU running under diverse conditions.