Louvre actuator
WML 870
- Louvre actuator for surface mounting.
- For comfort ventilation.
- For louvre.
- Especially suitable for narrow louvre profiles.
Available from mid 2025
About WML 870
Main features
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Natural ventilation
The product is suitable for comfort ventilation to ensure that the building’s users enjoy a comfortable indoor climate
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±24V Nominal voltage
The product is to be connected to a ±24V control panel
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MotorLink®
The product communicates with control panels with MotorLink® – an intelligent digital communication from WindowMaster
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TrueSpeed™
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
Description
- to be used with ±24V or MotorLink® control units
- synchronization of up to two louvre actuators – no need for an external synchronization module
- especially suitable for narrow windows
Actuator versions
The actuator is available as single or syncro as well as version A or B.
Single- / syncro actuator
Single actuator (-1):
The single actuator is required, if one actuator is to drive as a louvre window.
Syncro actuator (-2):
The syncro actuators are required if two actuators are to drive a louvre window.
The actuators which are to drive together, need to be the same variant.
A / B versions:
The version describes the zero point / opening direction of the actuator. The window is closed, when the actuator is at the zero point.
A version:
The actuator’s zero point is away from the centre of the actuator housing.
The gear rack’s stroke (opening direction) is towards the centre of the actuator housing.
B version:
The actuator’s zero point is towards the centre of the actuator housing.
The gear rack’s stroke (opening direction) is away from the centre of the actuator housing.
Specifications
| Installation Type | Surface mounted |
| Window types | Louvre |
| Stroke | 10 - 80mm, in increments of 10mm |
| Pressure Force | 800N |
| Traction force | 800N |
| Locking force | 2000N |
| Operating speed | Programmable from 0.3mm/s to 1.5mm/s |
| Power Supply | 24 VDC |
| Current consumption | 1 A |
| Nominal Voltage | 24 VDC (max. 10% ripple) |
| Life span | 11,000 opening and closing movements, full stroke |
| Size | 34 x 318 x 29 (H x W x D) mm |
| Consumption of power | max. 24W |
| Material | Lacquered metal housing for surface mounting |
| To be ordered separately | Brackets and standard extension cables type WLL |
Delivery includes
Louvre actuator with Molex Micro-fit connector for WLL 121. WLL 121 is to be ordered seperately.Downloads
Related Products
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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