Professional version of the popular dect repeater the crucial feature is that up to 3 can be daisychained togetherthe rtx 4002 pro can be used like the standard version and in exactly the same way it differs in that you can put a repeater within a repeater to further extend the coverage patternuses for this include hotels external yards perimeter and particularly large homes or officesimportant the rtx 4002 pro requires software installation on a pc the software can be purchased belo