Zigbee is one such low-cost, low-power, wireless communication standard. ZigBee's main advantage is its ability to be configured in socalled mesh networks with wireless nodes that are capable of multi-year battery lives. In a mesh topology, each node is in direct communication with its immediate neighbor; if a node fails, messages are automatically rerouted a sort of miniature Internet. ZigBee also supports more efficient star topologies, in which central access points talk to the nodes.