Forms the interface between KNX installations and IP networks and works according to the KNXnet/IP specification (tunnelling). KNX devices can be programmed via LAN with the ETS. Five tunnelling servers are available for this and for other clients (e.g. visualisations). The IP address of the IPS/S can be permanently set or received from a DHCP server. Power is supplied via 12..30 V DC or alternatively via PoE in accordance with IEEE 802.3af Class 1.