... control, remote control, RS232/485 central control.3.Monitor lift can lift up/down separately, grouply or entirely to reveal/hide the LCD ... the panel used for controlling to up, down, pause, backward and forward.5.Monitor lift of different size is suitable for computer ... . 6.Supply power automatically when the monitors lift up, power off when lift down. 7.Monitor lift is anti-theft, anti-dust and with ...