... 17-24'' LCD monitor 5.Manual,remote,RS232/485 ctrl Conference System Motorized LCD Lift / LCD Monitor Lift ... be conveniently operated with manual control, remote control, RS232/485 central control.3.Monitor lift can lift up ... Noise≤25dbControl ModeManual, remote, RS232/485 central controlAccessoriesVGA cable, power cable, remote controller, screws, stators etc. Conference System Motorized LCD Lift / ...