... 19 inch corresponding to the LCD monitor;2. Manual, RF remote, RS232, RS485 control;3. Direct factory price;4. Low noise;5 ... than 20s;7. RS232, RS485, manual and remote control;8. Lift up and down automatically;Three Control Modes1. Manual switchThe panel of the LCD ... Monitor lift has 5 buttons, which are used for manual control (from left to right): Horizontal rotation; Vertical rotation, Pause, ...