Concealed Locking / Espagnolette actuator type 815

WMB 815

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

Get a quote

About WMB 815

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 control panel



    The product communicates with control panels 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 locking system on the window, in such a way that the CE approval of the window is maintained. This unit can also be used should increased protection against weather or break in be desired.

Closing force of 2000N per locking actuator.

The locking actuator can be concealed mounted in aluminium, timber or plastic window frames. The locking system can be set in two positions: locked/open.

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 815-1 L: single, locking to the left
WMB 815-1 R: single, locking to the right

Double WMB (two WMB on the same window)
WMB 815-2 L: double, first WMB, locking to the left
WMB 815-2 R: double, first WMB, locking to the right
WMB 816-2 L: double, second WMB, locking to the left
WMB 816-2 R: double, second WMB, locking to the right


Installation TypeIntegrated
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 mm22 x 285 x 33 (H x W x D)mm
IP ratingConcealed: IP 32
Colour optionsBlack anodised aluminium (E6/EV1)

Delivery includes

Locking actuator with 35 mm cable with connector

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
Icon Motorlink White Large


Get in touch