RDF440BN-BK Flush mount touch BACnet and Modbus room thermostat for 2-/4-pipe FCU with 3-speed or DC fan outputs, DC 0…10V control outputs and 2 x multifunctional inputs, fit for square conduit boxes

• Built-in temperature sensor
• For fan coil applications
• AC/DC 24 V power supply
• Commissioning via local HMI, bus or Siemens smartphone app QuickConfig
• Communication protocol selectable: BACnet MS/TP or Modbus RTU
• Operating modes: Comfort, Economy and Protection
• 1 x universal input + 1 x digital input:
– External sensor
– Changeover sensor/switch
– Window contact
– Alarm source
– Presence detector
– Hotel keycard
• Slim profile (8.4 mm)
• Capacitive touch buttons
• Backlit display

Application selectable:
• 2-pipe system
• 2-pipe system with electrical heater
• 4-pipe system