For Zigbee networks, designers see a link quality indicator (0-255) that describes the connection strength in each direction between the radio modules. This can help in finding weak connections that might benefit from repositioning, antenna adjustment or additional mesh routers. Drag the module icons around to better understand the connections and relationships that make up a network. Each Digi XBee module icon shows a role badge and two address numbers. For Zigbee networks, the role badge at the top will be C for coordinator, R for router and E for non-routing end device. The long hexadecimal number in the white box is the 64-bit MAC or serial number for that node, which is selected at the factory and unique in the world. The second short hex number is the 16-bit network address. This is what the radios store in their network routing tables. It’s assigned at runtime and unique only for the current network. Users can double-click any module’s icon to directly launch configuration mode for that radio over the air. Zigbee router and coordinator nodes will have many mesh network connections to each other, usually with varied link qualities. However, developers will notice that end devices are different. They only connect to a single “parent” router node that handles all communications for the device when it is sleeping.