Use this optional control dial to navigate the pages on your VAD15 Display This control dial makes it easier to switch between pages quickly on your VAD15 Display. With its intuitive design, you can seamlessly navigate through all the features and content with ease. Plus, it’s compact and easy to use, making it the perfect addition to your VAD15 Display setup. Don’t waste time scrolling through endless pages simplify your experience with the VAD15 Control Dial.