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Product Description
Siemens STP121.40L10, S55174-A221
Thermal Actuator AC/DC 24V NO 4.0mm 1m on/off
for radiator valves and floor heatingElectrothermal actuators, stem retracted in a deenergized state (NO) for 2-position and quasi-proportional control of heating systems, chilled ceilings and terminal units. With position indication and connecting cable.Suited for:
for radiator valves and floor heatingElectrothermal actuators, stem retracted in a deenergized state (NO) for 2-position and quasi-proportional control of heating systems, chilled ceilings and terminal units. With position indication and connecting cable.Suited for:
- Radiator valves VDN../VEN../VUN../VPD../VPE..
- Floor heating
- Valves of other manufacturers
Additional info
For fitting to valve: Cap nut M30 x 1.5
For fitting to valve: Cap nut M30 x 1.5
