Fora MV-40P full rack multiviewer composite 4 channel Quad splitterPAL format1RU rack mountedputs 4 difference pal videocomposite inputs onto 1 screen in real time viewing. (ideal formonitoring cameras, vtrs, evs etc etc)lots of options in menus also for characters etc to label screens, of do full screen of each input also etc.NOTE the character option / menu option seems to be faulty on unit as when pressed for char on, doesn't show etcUnit is ok and works fine with character off so good cheaper unit