Touch Screen ControllerThe Trane Tracer™ UC600 programmable controller now features a user-friendly touch screen to improve operator efficiency and productivity. The Tracer™ TD7 is a 7-inch diagonal color touch screen. Trane said it developed the touch screen in response to customer requests for a more visually intuitive solution. Use of the Tracer UC600, a programmable BACnet unit controller, can be easily expanded as a business grows. It has the capabilities to meet the control needs for air handlers, central plants, and other high-point count applications.