For fan coil unit
- For 2-pipe fan coil units (RDQ400)
- For 2-pipe and 4-pipe fan coil units (RDQ410 and RDQ411)
- One multi-functional input (X1) for keycard contact or external sensor (RDQ411)
- LCD backlit display and keylock function
- Operating mode button: Comfort, Protection, and Economy (3-second long-press in Comfort)
- ‘M’ button:
- For 2-pipe applications: Heating, cooling, ventilation
- For 4-pipe applications (auto): Automatic heating/cooling changeover, ventilation
- For 4-pipe applications (manual): Heating, cooling, ventilation
- 3-speed fan control (automatic or manual) via fan button
- Display of either room temperature or setpoint
- Support of Chinese standard conduit boxes (max. 78 × 78) ≥ 45 mm (±2) deep and British metal standard conduit boxes (max. 75 × 75) ≥ 47 mm (±2) deep
- Adjustable commissioning and control parameters