Surface mounting Locking / Espagnolette actuator type 818

WMB 818

  • 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 818

Main features

  • Natural ventilation

    Natural ventilation

    The product is suitable for comfort ventilation to ensure that the building’s users enjoy a comfortable indoor climate

Smoke ventilation according to EN 12101-2

    Smoke ventilation according to EN 12101-2

    The product is with selected profiles and correct fabrication documentation suitable for smoke ventilation according to EN 12101-2 and uses 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



    The product can with the TrueSpeed™ technology slow down the actuator movement (down to 1mm per second), which enables the actuators to run completely silent.

Product Details

Compact 24 VDC locking actuator, which automatically locks/opens the espagnolette system on the window, in such a way that the CE approval of the window is maintained. This unit can also be used for increased protection against weather or break in.

Closing force of 2000N per locking actuator.

The locking actuator is fitted on windows with an espagnolette system without handles, together with electric window actuators with MotorLink®. The locking actuator can be surface mounted on or concealed in aluminium, timber or plastic window frames. The espagnolette system can be set in two positions: locked/open.
The WAB 817C bracket is supplied with the locking actuator.

Actuator variants
The locking actuator is available in single and double version, meaning up to two locking 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 817-1 L: single, locking to the left
WMB 817-1 R: single, locking to the right

Double WMB (two WMB on the same window)
WMB 817-2 L: double, first WMB, locking to the left
WMB 817-2 R: double, first WMB, locking to the right
WMB 818-2 L: double, second WMB, locking to the left
WMB 818-2 R: double, second WMB, locking to the right


Installation TypeSurface mounted
Window typesBottom hung
Side hung
Top hung
Traction force300N
Pressure Force300N
Locking force2000N
Operating speedProgrammable from 1mm/s to 8mm/s with TrueSpeed™
Power Supply24 V DC
Current consumption1A
Nominal Voltage24V DC (max. 10% rippel)V DC
LifetimeTested with 11,000 open and close movements, full stroke
Size mm25 x 285 x 37 (H x W x D)mm
IP ratingConcealed: IP 32
Surface mounted: IP 20
Colour optionsBlack anodised aluminium (E6/EV1)
Natural anodised aluminium (EV1)

Delivery includes

Locking actuator with 5m cable with fast-in / fast-on stick and 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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