The Interra ITR902-0001 KNX IP Router is a KNXnet/IP routing and tunnelling device that also works as a KNX IP line / area coupler between Ethernet/IP and KNX TP. No external power supply is required — the device is bus-powered from KNX. It speeds commissioning by addressing bus devices over IP and indicates operational, filtering and fault states with LEDs. UPnP is available and firmware can be updated via a web front-end.

ITR902-0001 filters traffic according to the installation hierarchy and built-in filter tables for group-oriented communication. Configuration from the subline can be blocked. Message filtering can be temporarily deactivated with a single button press; the automatic return period is ETS-configurable. Temporary access to other lines is possible without an ETS download to ease commissioning.

Key Features — KNXnet/IP Router

• Routing & tunnelling: KNXnet/IP between Ethernet and KNX TP.
• IP line / area coupler: Hierarchical filtering like a classic coupler, over IP.
• Bus-powered: No separate PSU; typ. < 25 mA from KNX.
• Web / UPnP: Comfortable firmware update and discovery aids.
• Manual filter bypass: Single-button temporary disable for commissioning.
• Compact MDRC: 90 × 36 × 71 mm; IP20; KNX certified; S-Mode; RJ45 Ethernet.

At a Glance

Specification	Detail
Order code	ITR902-0001
Product type	KNX IP Router (routing & tunnelling)
IP connection	RJ45 Ethernet
KNX current	< 25 mA
Dimensions (H × W × D)	90 × 36 × 71 mm
External PSU	Not required
Configuration	ETS (S-Mode)
Protection / certification	IP20 · KNX Certified

Applications and Related Products

• IP backbone / remote ETS: Tunnelling for commissioning laptops; routing between TP lines over Ethernet.
• TP-only coupling: ITR901-1102 Line Coupler Secure when both sides stay on twisted pair.
• USB interface: ITR901-0003 for direct PC USB commissioning on a line.
• Bus power: Allow for < 25 mA (e.g. ITR900 640 mA).

Choosing and Commissioning

Install only in distribution boards / enclosed housings on a 35 mm DIN rail (TH 35) in dry locations. Connect KNX TP and RJ45 Ethernet; commission with ETS (S-Mode). Use the published .knxproj under Downloads. Observe filter-table updates after topology changes. Full ratings and safety notes are in the Datasheet under Downloads (no separate product manual is listed on the Interra page for this SKU).