S55770-T439

Product ID:163536
Updated: 2026/8/16
Siemens S55770-T439

Key Features

  • 1Precisely control room temperature for heating and cooling in individual zones.
  • 2Integrate seamlessly with Modbus devices via RS485 for central control.
  • 3Support 2-pipe and 4-pipe fan coil unit configurations with versatility.
  • 4Utilize two multifunctional inputs for external sensors and changeover.
  • 5Operate easily via local DIP switches or remote Modbus tools.

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Technical Specifications

Detailed engineering parameters

ParameterValueParameterValue
Setpoint Range
5...40 °C
Operating Voltage
AC 230 V
Installation Method
Mounted in round and square junction boxes, with a hole spacing of 60 mm
Operating Deviation
0.5…6 K
Power Consumption
9 VA
Lifecycle
P.M300
Country of Origin
Switzerland
ECCN
N
AL
N
Model Number
S55770-T439

Specifications may be subject to change without notice

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