This object holds the UPnP Unique Device Name (UDN), a standardized identifier string that UPnP-capable devices and controllers use to distinguish this device from every other UPnP device on the network. An administrator or a UPnP-aware application reads this value to positively identify the switch when multiple UPnP-enabled devices are present on the same network segment. For example, rlUPnPUniqueDeviceName returning a UUID-formatted string lets a home or office UPnP controller uniquely reference this specific switch rather than confusing it with another device.