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US/U 2.2 Universal Interface Technical Data and Wiring Guide

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This document provides technical data and wiring instructions for the ABB i-bus KNX US/U 2.2, a two-channel universal interface that can be parameterized as either inputs or outputs. It details power supply requirements, input/output specifications, connection cables, and application programs for integrating conventional push buttons, contacts, or LEDs into a KNX building automation system.

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