The DS1402-RPL+ 20' cable is a coiled cable used to connect iButtons to1-Wire masters such as the LinkUSB. The RPL+ suffix indicates that this cable is 20 inches long when uncoiled. One end of the cable can be used either as a momentary touch or dwelled contact for an iButton. The other end is a modular connector for the master.
For more information on this product please visit its data sheet here:DS1402-RPL DataSheet.