... For 17-24'' LCD monitor 5.Manual,remote,RS232/485 ctrl Conference System Motorized LCD Lift / LCD Monitor Lift INTRODUCTIONMonitor ... to reveal/hide the LCD monitors.4.Five buttons on the panel used for controlling to up, down, ... ≤25dbControl ModeManual, remote, RS232/485 central controlAccessoriesVGA cable, power cable, remote controller, screws, stators etc. Conference System Motorized LCD Lift / ...