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Italian The pane is part of the joinery system
Thickness, support, installation clearance and setting method must suit the frame. The final variant is confirmed from a profile section or information supplied by the window manufacturer.
Smart window with active PDLC glass
DGF smart window with switchable glass.
Switchable glass becomes an integral part of the window and changes from clear to frosted. A DGF smart window provides daylight and privacy without a blind, with glazing, power, wiring and controls engineered for the specific frame.
- 0 blinds and tracks
- ~1 W/m² power consumption
- SMART integration ready
- 01Privacy built into the pane
- 02No hardware covering the reveal
- 03Controls matched to the home or building
DGF solution
A smart window: privacy in the glass, not in front of it.
At DGF, a smart window means a window or correctly engineered glazing unit containing active switchable glass. With power on the glass is clear; with power off it turns frosted and obscures views. The function provides privacy rather than automatic opening or full blackout.
A smart window is engineered as part of specific joinery rather than as a universal add-on. We review dimensions, glazing build-up, frame, sash movement, moisture, exposure, cable routing, power-supply access and operation so the switchable pane works with the complete window.
Best suited to:
- Bathrooms
- Bedrooms
- Apartments
- Private offices
How the solution works
How does a smart window with switchable glass work?
A DGF smart window is active glass engineered as part of specific joinery or a glazing unit. The transparency change comes from the PDLC layer, but the quality of the complete solution also depends on the frame, edge support, sealing, cable route and access to the power supply and controls.
Unlike an internal partition, a window may face temperature changes, moisture, sunlight and opening-leaf movement. A meeting-room configuration cannot simply be transferred to a bathroom window. We first analyse the existing or proposed joinery and confirm a feasible glazing arrangement.
Important: switchable transparency primarily provides privacy. It does not automatically replace the thermal, solar-control, acoustic or safety performance required from the complete window; those properties are specified for the full glazing build-up and location.
The cable must pass through the window detail
The cable exit is selected in relation to the frame and opening direction. The route must not be pinched by a bead, seal or moving part of the sash.
External conditions change the requirements
Façade orientation, glazed area, moisture and weather exposure influence the construction. An external window needs separate confirmation from internal bathroom glazing.
Controls remain convenient and accessible
A switch can work like an ordinary electrical control, with a remote or app extending operation. The power supply and connections are positioned for access without dismantling the entire interior finish.
What you gain
Technology that follows the space.
The result is not defined by one parameter. It comes from the right pane, considered controls and installation detailing.
No mechanical screen
No blind means a clean reveal, fewer elements and calmer architecture.
Privacy on demand
The glass changes state whenever discretion is needed without losing the window.
Simpler care
No fabrics, slats or tracks that collect dust and moisture.
Control integration
A wall switch, remote or automation becomes a natural part of operating the room.
From concept to commissioning
One point of responsibility. Three clear stages.
-
01
Review the window
We review dimensions, construction, conditions and possible wiring routes.
-
02
Integrate the elements
Glass, power supply, wiring and controls form one coordinated system.
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03
Commission the system
After installation we test switching and hand over a simple operating method.
Space and purpose
A DGF window solves privacy without taking light away from the architecture.
It is most valuable where a conventional screen is awkward, moisture-sensitive or interrupts clean joinery lines. Every application still requires assessment of the complete window.
Bathroom and ground-floor home
Privacy without a blind in a humid zone
The window stays clear for daylight and views, then turns frosted during bathing. There is no fabric beside the glass or blind to lower by hand. Design includes the evening view, distance from water sources, edge sealing and safe placement of electrical components.
Apartment and hotel room
One space, two levels of intimacy
Glazing between a room and bathing zone can carry light deeper into the plan and make the interior feel larger. Switching restores a clear functional boundary. Controls must be obvious to a guest, so a local switch normally remains primary while automation can complement the room scene.
Home office and urban ground floor
Daylight by day, reduced views during work
At a street-facing window the frosted state can reduce views during video calls or document work without making the room dark. If solar control or full blackout is also needed, those requirements must be solved in the complete glazing package, not by PDLC alone.
A project, not a gadget
The best result comes from early integration.
When glass, wiring and controls enter the design before finishes, the system can remain almost invisible. This is especially important in bathrooms, apartments and premium interiors.
View DGF projectsProduct specifications
Facts instead of vague promises.
Every pane is technically confirmed for its final dimensions and installation. The values below describe the base product configuration.
Ask about your dimensions| Function | clear / private window |
|---|---|
| Active glass | configured for the project |
| Power | 48 V DC |
| Energy use | ~1 W/m² |
| Controls | wall switch, remote or automation |
| Application | selected after construction review |
| Dimensions | made to project |
Typical applications
- bathrooms
- apartments
- hotels
- bedrooms
- private offices
- wellness areas
Informed selection
New window, replacement glazing or an internal glazed screen?
The word “window” covers several very different technical situations. Scope depends on whether the project is new, the frame already exists, the sash opens and which conditions the glass will face.
Coordinate early in a new project
Frame section, glazing build-up, cable and power supply can be planned together, producing cleaner detailing and fewer later compromises.
Assess the frame in retrofit work
Not every existing frame accepts a new thickness, weight and cable route. Photos, bead dimensions and profile data are needed.
Separate privacy from solar control
PDLC changes visibility, while other window requirements need their own solutions in the glazing build-up. They should never be assumed.
Check sash movement and service access
Opening movement changes the cable route and connection protection. Active components must remain free from conflict throughout the sash travel.
Solution family
Choose the glass for the decision it needs to support.
Not every project needs the same configuration. Compare the core roles and confirm the details during consultation.
DGF Classic
Whole pane: clear or frosted
The versatile choice for most partitions
DGF Segment
Independently switched zones
When privacy should cover only part of the pane
DGF Color
Switching combined with colour
Interiors with a strong identity
Smart window
Privacy integrated into the window
Bathrooms, apartments and private interiors
DGF + SUPLA
App, scenes and remote control
When glass becomes part of a smart home or BMS
Knowledge before a decision
See how an active window fits into everyday interiors.
Before deciding, separate inspiration from complete-window requirements. These guides compare privacy screens, explain installation and distinguish laminated glass from applied film.
DGF article
Switchable glass, a blind or frosted glass?
A comparison of privacy, light, cleaning, installation and cost.
DGF article
Switchable-glass installation
Review frame, edge, cable and service-access requirements.
DGF article
DGF glass versus liquid-crystal film
A construction comparison that matters especially in window retrofit.
DGF article
Active-glass parameters
What must be confirmed for the glazing unit, frame and window exposure.
DGF article
Window privacy at night
Why interior lighting and distance from the pane change perception.
Questions before a project
Clarify first. Quote second.
Pricing depends on dimensions, pane count, controls and installation. A few answers usually identify the right direction.
01Does a smart window replace a blind?
For privacy, yes. The glass switches between clear and frosted states without an additional mechanical screen.
02Can the window be controlled from a phone?
Yes, when the project includes the appropriate controller and integration. A wall switch or remote can also be used.
03When is the best time to contact DGF?
Ideally before ordering the frames and closing the electrical installation. This allows the glass, wiring and power supply to be planned properly.
04What does “smart window” mean at DGF?
It is a window or glazing unit with an active PDLC layer that switches the glass between clear and frosted. The design also covers frame compatibility, cable routing, power supply, controls and site requirements.
05Does a DGF smart window open automatically?
That is not the core DGF function. Here “smart” refers to controlled switching of the glass. If the project includes an opening sash or separate window automation, its feasibility and integration are assessed separately.
06Can smart glass be installed in an existing frame?
Sometimes, but the rebate, permitted glazing thickness and weight, support method and a safe cable route must be checked. The decision follows an assessment of the profile, photos and measurements.
07Does a smart window replace a solar blind?
This should not be assumed. The frosted state provides privacy and diffuses light, but overheating, solar radiation and blackout requirements must be defined separately for the complete glazing package.
08Can a smart window be openable?
It depends on the joinery and how the cable is routed through a moving sash. Profile data, opening direction and travel are needed to confirm a solution without conflict or strain on the connection.
09Does a smart window retain thermal and acoustic performance?
Thermal, acoustic, safety and solar performance belongs to the complete glazing unit and joinery, not the PDLC function alone. It must be specified for the actual window, frame, size and location and supported by the relevant solution documentation.
10Can smart glass be used in an external window?
It can form part of a correctly designed glazing unit, but not every configuration is automatically suitable for a façade. We assess insulating-glass construction, exposure, temperature, moisture, edges, frame, wiring and the complete window requirements.
11What determines the price of a smart window?
A quotation covers more than the active pane: size, glazing-unit build-up, frame compatibility, opening method, cable route, power, controls, survey and installation all matter. A frame section, dimensions and whether the window is new or existing are the best starting information.
Technical consultation