System for physically mounting a multifunction user interface to a basic multifunction sensor to access and control various parameters of a control network environment

A multifunction user interface provided as an add-on option to a more basic multifunction sensor which does not provide a display or keypad to provide a local user interface to access and control parameters of a control network, wherein:

• the basic multifunction sensor provides a plurality of parameter sensors in one sensor housing which can interface with and control operation of one or more processor control systems connected by a network bus in an occupied space networked environment, and comprises an occupancy sensor and a temperature sensor, and a common network communications and control processor coupled to a common communication transceiver which are shared in common by the occupancy sensor and the temperature sensor, such that the basic multifunction sensor can interface with and control operation of one or more distributed processor control systems for control of an occupied space networked environment;
• and
• the multifunction user interface comprises a display and a keypad input, which are physically mounted to and on the basic multifunction sensor, controlled by a controller, and which are electrically coupled to the communications and control processor to provide a local user interface to access and control parameters of the control network.