Because of the communication via the KNXnet/IP standard, the new KNXnet/IP devices IP interface N 148/22 and IP router N 146/02 from the Siemens Building Technologies division enable completely new areas of application for building technologies such as operating divided properties via existing data networks. Siemens will be presenting both devices to a wide audience for the first time at Light + Building, the leading world trade fair for architecture and technology in Frankfurt, Germany, from April 11th to the 16th 2010 .