The TTN RDU-Touch Hub for Multi-Drop (RDU-T/Hub) connects up to four RDU-Touch user interfaces to a single FCU-503 comfort controller. This setup suits larger spaces or open plan layouts. It simplifies temperature control across multiple locations.

By linking the RDU-Hub to your FCU-503, you can integrate four synchronised RDU-Touch user interfaces. This arrangement offers flexibility in control points, ideal for expansive kitchens and living areas or properties needing multiple temperature adjustments from one controller. The design reduces installation costs while maximising functionality.

Installation with the RDU-Hub is straightforward. Each RDU-Touch unit requires an RJ45 connection through a POE style interface. This setup avoids complex addressing procedures or screen generation, allowing for a quick installation.

Setting up the RDU-Hub involves three steps: connect the desired number of RDU-Touch units, adjust the DIL switches on the Hub for communication terminations, and specify the number of RDU-Touch units in the FCU-503 configuration. The RDU-Hub powers the RDU-Touch units via a clip-in RJ45 connection, allowing temperature data to flow back to the FCU-503 controller. Control can be based on individual units or an average of all connected sensors.