Engenuity Systems Inc. (Phoenix), a global leader in sales and support of LONWORKS®-based products, has signed an agreement with TAC Americas (Dallas) to distribute the TAC Xenta® 100 application-specific product series, which includes controllers for fan coil units, chilled ceiling units, vavs, and rooftop units. Under the terms of the agreement, Engenuity Systems will provide sales, marketing and technical support for the TAC Xenta product line. In addition, the products will be integrated into an in-house network and Internet demo for support, presentations and training.