One of the biggest advantages of switchable smart film is that privacy doesn’t have to be controlled by blinds, shades, or curtains. With the right electrical controls, smart film can change from opaque to clear almost instantly using something as simple as a wall switch—or as sophisticated as an automated smart home or building management system.
A standard wall switch is still one of the most common ways to operate smart film, but it is far from the only option. Smart film can also be configured for remote controls, smart switches, mobile applications, voice-controlled systems, timers, sensors, and integrated automation systems.
The best control method depends on the project, how the glass is being used, and how much automation the owner wants.
How Does Smart Film Turn On and Off?
Switchable smart film uses PDLC (Polymer Dispersed Liquid Crystal) technology. Inside the film is a layer containing microscopic liquid crystals.
When electrical power is applied, the liquid crystals align and allow light to pass through, causing the film to appear clear. When the power is removed, the crystals return to their scattered orientation and the film becomes opaque.
In a typical installation:
- Power ON = Clear
- Power OFF = Opaque
A transformer or power supply provides the appropriate electrical power to the smart film. The control system determines when that power is supplied.
Because the switching function is electrical, there are many different ways to control it.
1. Standard Wall Switch
The simplest way to control smart film is with a standard wall switch.
The experience is similar to turning a light on or off. Flip the switch and the smart film changes from opaque to clear. Flip it again and the glass returns to its opaque state.
Wall switches are particularly popular for conference rooms, private offices, bathrooms, bedrooms, healthcare spaces, and other applications where someone wants immediate control of the glass from a fixed location.
They are also intuitive. Anyone entering the room can understand how to operate the glass without an app, remote, or special instructions.
For many projects, a traditional switch is all that is necessary.
2. Remote Control
Smart film can also be configured to operate with a wireless remote control.
Instead of walking over to a wall switch, the user can change the glass from clear to opaque from elsewhere in the room.
Remote operation can be particularly convenient in bedrooms, living spaces, conference rooms, executive offices, hospitality environments, and other areas where the glass may need to be changed frequently.
Depending on the control configuration, a remote may operate a single smart film installation or multiple zones.
For example, a home with smart film installed on several windows could potentially have separate controls for different rooms or groups of windows.
3. Smart Switches and Smartphone Control
Smart film can also be incorporated into compatible smart switching systems.
This can allow users to control their glass through a smartphone or tablet rather than relying exclusively on a physical wall switch.
With an appropriate control system, a homeowner could open an app and change selected smart film windows from clear to opaque without being in the same room.
This becomes particularly useful when smart film is installed throughout a home or across multiple rooms.
Rather than controlling every window individually, the electrical system can be designed around logical groups or zones.
For example:
- Dining room windows
- Bedroom windows
- Bathroom glass
- Exterior-facing windows
- Conference rooms
- Private offices
The exact capabilities depend on the control equipment and automation platform selected for the project.
4. Smart Home Automation
Smart film can be incorporated into a broader smart home system when compatible electrical controls are used.
Instead of treating the smart film as a standalone product, the glass becomes another controllable component of the home alongside lighting, climate control, motorized shades, security systems, and other connected devices.
This opens up considerably more flexibility.
For example, a homeowner could create a Privacy scene that turns selected smart film windows opaque while simultaneously adjusting lighting in the room.
Another scene might place the home into an evening mode, changing designated exterior-facing smart film windows to opaque at a scheduled time.
The important distinction is that the PDLC film itself doesn’t need to contain all of this intelligence. The automation occurs through the electrical control system supplying power to the film.
That means control options can often be designed around the requirements of the individual project.
5. Can Smart Film Be Voice Controlled?
Voice control may also be possible when the smart film is connected through compatible smart-home switching or automation equipment.
Systems that integrate with platforms such as Amazon Alexa or Google Home can potentially allow the smart film to be incorporated into voice-controlled routines.
Instead of flipping a switch, a homeowner might use a voice command to activate a predefined privacy setting.
For example, a voice command could trigger a smart-home scene that changes selected glass to opaque while also adjusting lighting or other connected devices.
Voice-control capabilities depend on the automation equipment being used, so integration should be planned with the smart-home provider, electrician, or system integrator.
6. Timers and Scheduled Privacy
Smart film doesn’t necessarily have to wait for someone to press a button.
It can also be incorporated into systems that operate according to a schedule.
Consider a home with large exterior windows. The homeowner may enjoy clear glass and outdoor views throughout the day but want greater privacy every evening.
Instead of manually changing the windows each night, an automation system could be configured to change designated smart film zones according to a schedule.
Commercial environments can benefit from scheduling as well.
An office could establish different operating modes for business hours and after-hours use. Hospitality or healthcare environments may have their own privacy schedules based on how individual spaces are used.
Automation makes the glass responsive to the way the building actually operates.
7. Sensors and Automated Smart Film
More advanced systems can use sensors or other external controls to determine when the glass should change state.
One example is occupancy-based control.
In a conference room, an integrated system could potentially trigger a privacy mode when the room becomes occupied or when a meeting begins.
Similar concepts can be applied to healthcare environments, offices, hospitality spaces, and other buildings where privacy requirements change throughout the day.
Sensors may also be incorporated into broader building automation strategies depending on the equipment and system design.
This is where switchable glass becomes more than simply an alternative to blinds. It can become part of the building’s automated environment.
8. Controlling Multiple Smart Film Windows
Large smart film projects often involve more than one piece of glass.
Fortunately, every panel doesn’t necessarily need its own individual control.
An electrical system can be designed to organize smart film into different zones, allowing multiple panels or windows to operate together.
Imagine a home with smart film installed across numerous windows.
The homeowner might want the ability to control:
- Each room independently
- All windows on one side of the house
- All bedroom windows
- All exterior-facing windows
- The entire home’s smart film system
A commercial office might instead have separate zones for individual conference rooms, executive offices, training rooms, and common areas.
Thoughtful zoning can make a large smart film installation much easier to use.
9. Commercial Building Automation
Smart film controls aren’t limited to residential smart-home systems.
Commercial smart glass and smart film installations can also be incorporated into compatible building control and automation systems.
This can be useful in offices, healthcare facilities, hotels, educational environments, retail spaces, and other commercial properties.
A conference room, for example, might normally remain clear to maintain an open office environment. When privacy is required, the glass can become opaque using a wall control, remote, or integrated room-control system.
Healthcare applications can use similar strategies for patient privacy, consultation rooms, treatment areas, or other spaces where visibility requirements change.
Hotels may incorporate switchable glass into bathrooms, guest rooms, suites, meeting spaces, or other architectural features.
The appropriate control strategy depends on the application and the building’s electrical and automation infrastructure.
10. What Happens to Smart Film During a Power Outage?
Standard PDLC smart film is typically opaque when it is not receiving power.
That means if electrical power is lost, the film returns to its unpowered opaque state.
For many applications, this behavior is beneficial because the glass defaults to privacy rather than remaining clear.
When power is restored, the control system can once again supply power to the smart film and return it to its clear state.
This is an important consideration when designing smart film systems for bedrooms, bathrooms, conference rooms, healthcare spaces, and other privacy-sensitive applications.
What Is the Best Way to Control Smart Film?
There isn’t one control system that’s best for every project.
For a single conference room, a simple wall switch may be the most practical solution. A bedroom may benefit from a remote control. A luxury residence with smart film throughout the home may be better suited to a smart-home automation system with multiple zones.
Large commercial projects may require integration with room controls or a broader building automation strategy.
The best time to make these decisions is before installation.
Planning the controls early makes it easier to determine where transformers, wiring, switches, control modules, and other electrical components should be located. It also helps ensure that the finished installation looks clean and operates the way the owner expects.
Smart Film Can Be as Simple—or as Automated—as You Want
One of the advantages of smart film is its flexibility.
A smart film installation doesn’t have to be limited to a basic on/off switch. Depending on the electrical and control system, switchable glass can be operated with wall switches, wireless remotes, smartphones, smart-home platforms, voice commands, timers, sensors, and building automation systems.
The key is designing the control strategy around the way the space will actually be used.
Opaque Smart Glass provides professional smart film and smart glass installation for residential and commercial projects nationwide. Our team can help determine the appropriate product, electrical configuration, and control approach for your application.
Planning a smart film or smart glass project? Contact Opaque Smart Glass to discuss your glass, control requirements, and installation.
Frequently asked questions
Can smart film be controlled remotely?
Yes. Smart film can be configured with compatible wireless remote controls, allowing users to switch the film between clear and opaque without using a wall switch.
Can I control smart film from my phone?
Yes, when the smart film is connected through a compatible smart switch or automation system. The available smartphone controls depend on the equipment selected for the installation.
Can smart film work with Alexa or Google Home?
Potentially, yes. Smart film can be incorporated into compatible smart-home systems that support voice platforms such as Amazon Alexa or Google Home. Integration is handled through the control system rather than the PDLC film itself.
Can multiple smart film windows be controlled at the same time?
Yes. Multiple smart film panels or windows can be organized into control zones so that groups of glass can operate together. Larger installations can also be designed with both individual and grouped controls.
Can smart film operate automatically on a schedule?
Yes. When connected to a compatible automation system, smart film can be scheduled to change states at predetermined times, such as making residential windows opaque every evening.
Can smart film use motion or occupancy sensors?
Smart film can potentially be integrated with compatible sensors and automation equipment. For example, an automated system could trigger privacy in an occupied conference room. The exact configuration depends on the control system and project requirements.
Does smart film become clear or opaque when the power is off?
Standard PDLC smart film is opaque when power is off and becomes clear when electrical power is applied.
Do I need to decide how my smart film will be controlled before installation?
Ideally, yes. Planning the controls before installation allows the installer, electrician, and automation professionals to coordinate wiring, transformers, switches, control modules, zones, and other components for a cleaner finished installation.