RS232/485 Group Controller feature:

Control method: Grouop control, single control, remote control, control by computer
Connect with USB port to control office equipment through computer and related software.
Wireless control.
Control projection screen to move up/down/stop.
Control LCD and adjust height & angle.
Control projector lift up/down/stop
Control and adjust height & volume of microphone
Control curtain, blinds and other device in the office.

If you are interested in our products, please feel free to contact us any time. erinli_sz(at)hotmail.com