The RM-1BP Remote Commander controller is a small hard-wired controller designed to work with the HVR-Z1U HDV™ Camcorder, the HVR-A1U HDV Camcorder, and other Sony camcorders that have a LANC port. The RM-1BP Remote Commander unit attaches to the handle of most standard tripods and enables the user to remotely control focus and zoom of the camcorder, as well as offering Start-Stop record and Record/Review control. The RM-1BP Remote Commander unit offers three different zoom speed ranges, for enhanced creativity and precise control.