WMB 811 / WMB 812

Locking / Espagnolette actuator

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

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WMB 811 / WMB 812

About WMB 811 / WMB 812

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 power supply



    The product communicates with power supplies 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


Technical specifications
Locking force 2000N
Operating voltage 19-32 VDC
Current consumption  1A
Primary voltage 230VAC, ±10%, 50/60Hz, 50VA
Size 285 x 30 x 42mm (WxHxD)
Colour aluminium (RAL 9006)

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.

Read more
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