Siemens RDF302/VB, S55770-T428

• Modbus communications

• For heating and/or cooling applications

• 2 or 3-position control outputs

• Output for 1-speed or 3-speed fan

• 2 multifunctional inputs for keycard contact, external room / return air temperature (QAH11.1, QAA32), heat / cool changeover, operation mode changeover, window contact on/off, dewpoint monitor, electrical heater enabled, fault contact

• Operating modes: Comfort, Economy and Protection

• Automatic or manual heating/cooling changeover

• Adjustable commissioning and control parameters

• Minimum and maximum setpoint limitation

• Color of housing: black (RAL 9004)

• Backlit display

Application selectable:

• 2-pipe system

• 2-pipe system with electrical heater

• 4-pipe system