Carrier Zone dampers are the latest in design and were developed to fit field requirements for a variety of ductwork shapes and sizes. These dampers use 24 VAC direct drive actuators for smooth, quiet performance. There is a 1/2-in. direct-drive mounting hub for securing the damper blade The Infinity® System Control is designed for homeowners who understand the value of precision comfort and an easy to use, intuitive user interface. With wireless connectivity, occupancy sensing capabilities and built-in smarts, the Infinity System Control puts you in command of comfort and energy savings like never before. As part of a complete, communicating Infinity® System, this smart control takes full advantage of the best technology Carrier has to offer, including Greenspeed®  technology and Hybrid Heat®  system management. Taking your comfort well beyond temperature control, the Infinity System Control can manage humidity levels, airflow, ventilation, indoor air quality and up to 8 zones, from wherever you are, with a connected smartphone or tablet. It's also compatible with Amazon™ Alexa™.