Spindle Actuator 900N

WMS 409-n

This powerful WindowMaster linear actuator is suitable for louvres and roof openings in both smoke ventilation and natural ventilation systems.

To be used together with ±24V control units or with MotorLink™ MotorControllers.

Synchronisation of up to 4 window actuators without the need for an external synchronisation module.

Genuine position feedback and 3 speed operation are possible when using MotorLink™ MotorControllers.

The electronics in this actuator can be programmed to suit specific requirements – i.e. pressure and traction force, stroke, speed and sound level – with the WAT 100 programming box, this is also possible following installation.

spindle actuator


The actuator has an integrated reverse function to ensure a prolonged life span of the window gaskets.

Brackets and fastenings to be ordered separately.

Technical Specifications



Additional Information

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spindle actuator dimensions