RDF600KN Flush Mount KNX Room Thermostat 2/4-Pipe FCU On/Off Output + 2 Universal Inputs Round/Square Conduit Boxes S55770-T293

The RDF600KN is a flush-mount KNX room thermostat designed for 2-pipe and 4-pipe fan coil unit systems. It provides on/off outputs for valve actuators and fan stages through the KNX automation network. Two universal inputs accept external sensors such as keycard contacts, return air temperature probes, window contacts, presence detectors, and heat/cool changeover signals.

Operating at AC 230 V with KNX S-Mode communication, it integrates seamlessly into existing KNX backbones. Compatible with round and square conduit box apertures, reducing site rework during retrofits.

• Commercial offices with 2-pipe chilled water FCUs install the RDF600KN as the primary room thermostat connected to the central BMS
• Hotels use the universal input for keycard-triggered automatic economy mode when guests leave
• Retrofit projects benefit from dual conduit-box compatibility for drop-in replacement of legacy thermostats
• Healthcare facilities use occupancy-sensor input for automatic setback in unoccupied rooms
• Compact form factor suits any space needing reliable KNX thermostat control