Meaning of positions description: (ON) - ON: the switch automatically switches back to the ON position. ON - ON: the switch remains in the selected position. And must be switched manually. (OFF) - ON: the switch automatically switches back to the ON position. OFF - (ON): the switch automatically returns to the OFF position. OFF - ON: the switch remains in the selected position. And must be switched manually. (ON) - OFF - (ON): the switch automatically returns to the OFF position. ON - OFF - ON: the switch remains in the selected position. And must be switched manually. Ask a product question