In the communications protocol standard IEEE 802.15.4 MAC has established a network device features two types: (1) A device that has full capability (Full Function Device, FFD) and a device that acts. Some abilities (Reduced Function Device, RFD) (2) the operation of the FFD and RFD different FFD can be contacted with any node while RFD can not communicate with other nodes have been. Limited to only communicate with FFD RFD nodes, but it was limited in terms of energy and inexpensive to use. Thus cutting out unnecessary functions as a mechanism to route (Route) on the establishment of a network of wireless sensor device FFD and RFD of PANs (Personal Area Networks).