Surface mounting Locking / Espagnolette actuator type 811

WMB 811

  • Locking actuator / espagnolette for surface or concealed mounting
  • For comfort ventilation
  • Fitted on windows with an espagnolette system without handles

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About WMB 811

Main features

  • Smoke ventilation

    Smoke ventilation

    The product is suitable for smoke ventilation and use natural driving forces for the efficient exhaust of smoke and heat

±24V Nominal voltage

    ±24V Nominal voltage

    The product is to be connected to a ±24V control panel



    The product communicates with control panels with MotorLink® – an intelligent patented digital communication from WindowMaster

UL certified

    UL certified

    The product is UL certified according to UL325 for US and CSA C22.2 no.247-14 for Canada

Product Details

Compact 24 VDC locking actuator / espagnolette, which automatically locks/opens the espagnolette system on the window, in such a way that the CE approval of the window is maintained.

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

This unit can be used for increased protection against weather and for increased burglary protection. Closing force of 2000N per espagnolette.

The espagnolette is fitted on windows with an espagnolette system without handles, together with electric window actuators with WindowMaster MotorLink®.

The espagnolette can be surface mounted on or concealed in aluminium, timber or plastic window frames.

The locking / espagnolette system can be set in two positions: locked/open.

The locking / espagnolette bracket can be fitted in two different positions and thereby adjusted to the window profile.

Actuator variants
The espagnolette is available in single and double version, meaning up to two espagnolette actuators can be mounted on the same window.
Both the single and the double version can be used with up to four window actuators on the same window.

Single WMB (one WMB)
WMB 811-1 L: single, locking to the left
WMB 811-1 R: single, locking to the right

Double WMB (two WMB on the same window)
WMB 811-2 L: double, first WMB, locking to the left
WMB 811-2 R: double, first WMB, locking to the right
WMB 812-2 L: double, second WMB, locking to the left
WMB 812-2 R: double, second WMB, locking to the right


Installation TypeIntegrated
Surface mounted
Window typesBottom hung
Side hung
Top hung
Traction force500N
Pressure Force500N
Locking force2000N
Espagnolette movement18mm
Operating speedProgrammable from 1mm/s to 20mm/s
Power Supply24 V DC
Current consumption1A
Nominal Voltage24V DC (max. 10% rippel)V DC
LifetimeTested with 11,000 open and close movements, full stroke
Size30 x 285 x 42 (H x W x D)mm
IP rating20
Colour optionsGrey (RAL 9006)
MaterialZinc housing protected against corrosion
Fire testB300 testeed according to EN 12101-2:2003

Delivery includes

Locking / espagnolette actuator with 100mm cable and locking / espagnolette bracket.

Intelligent control of windows: MotorLink®

MotorLink® is a communication technology that enables 2-way control and feedback between window actuators and the Building Management System via the MotorController. All WindowMaster control systems are MotorLink® capable with many of our actuators. Click below to learn more and see related products.

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