RDF600KN/VB Flush Mount KNX Room Thermostat for 2/4-Pipe FCU Fits Round Square Conduit Boxes + 2 Universal Inputs S55770-T430

The RDF600KN/VB is a black-finish KNX flush-mount room thermostat designed for 2-pipe and 4-pipe fan coil unit systems. It provides on/off outputs for valve and fan actuators through the KNX bus at AC 230 V. Two universal inputs accept external digital and analogue signals from keycard switches, return air sensors, window contacts, presence detectors, and heat/cool changeover devices.

Compatible with both round and square conduit box openings for new construction and retrofit installation. All configuration—including operating modes (Comfort/Economy/Protection), commissioning parameters, and input mappings—is performed via ETS.

Luxury hotels choose the RDF600KN/VB for guest rooms where a black thermostat matches premium interior standards while delivering full KNX FCU control. Upscale apartments use it in dark-toned living areas.

It serves as a direct color-substitutable replacement for the ivory-white RDF600KN when projects need darker aesthetics without changing specifications. Two universal inputs enable keycard-based energy saving and window-contact interlock functionality.