MX720, MW721 User Manual
Page 32
... a triple beep sound will see the message "Timer is frozen on the remote control. You can operate your computer is correctly made and the mouse driver on your display software program (on the projector or remote control to freeze the image. Freezing the image Press Freeze on the screen. To release...
... a triple beep sound will see the message "Timer is frozen on the remote control. You can operate your computer is correctly made and the mouse driver on your display software program (on the projector or remote control to freeze the image. Freezing the image Press Freeze on the screen. To release...