What are Wireless Projectors and How Do They Work?

Wireless projectors are an emerging technology that streams a video signal to an LCD or DLP projector. This eliminates the need for tangled cords, plugs, and dangling wires.

Typical wireless projectors use either Wi-Fi or Bluetooth to transmit the images from laptops, tablets, or smartphones to the display screen.

The concept is not completely new; there was a Microsoft projector released in 1981 that could transmit images wirelessly on a TV without any cables connecting it. Despite being technologically feasible at this time, the public did not take much interest in these wireless projectors and they were discontinued in 1986.

What is a wireless projector?

What is a wireless projector?

A wireless projector is a small form-factor display that connects to the projector with an HDMI cable and transmits the video signal built into the laptop or mobile device.

The built-in wireless transmitter can be either Wi-Fi or Bluetooth, depending on the model. The transmitter is attached via a special HDMI cable to a laptop or desktop computer that contains a wireless chipset.

The chipset takes the video from the computer and converts it into wireless signals; these are then transmitted through the built-in antenna on the projector. A receiver can be placed at each end of an auditorium for optimal reception.

History of wireless projectors

The first wireless projector was created by Microsoft in 1981. This was technically feasible at the time, but it did not gain a lot of traction with the public. Since then, there have been several attempts to revive this technology but failed due to low demand.

In 2006, Logitech released the first commercially available wireless projector. It lasted only a year on the market because of its high price tag and poor quality image; it was priced at $1500 and used DLP technology with only 1,280 x 720 resolution. There were also issues with the wireless range of the device.

History of wireless projectors

There were other attempts to revive this technology in 2010 and 2012, but all of them failed due to low demand. Today, there are two major companies that have entered the market; one is Razer, a computer hardware manufacturer that released its first wireless projector in 2017, and Epson, who has been developing this technology since 2012.

How do wireless projectors work

The wireless projector works by bridging a PC’s HDMI port with the computer’s wireless chipset. The HDMI port on the PC is then connected to the projector via an HDMI cable, which is then plugged into one of the projector’s USB ports.

In this configuration, images are sent from the PC to the projector through its internal wireless receiver and then transmitted from each receiver to a screen using only a single HDMI cable.

As long as both ends of the HDMI cable are equipped with wireless receivers, there will be no need for any other cables or plugs between them. This eliminates all wires and cords needed to convert an image into video signals and transmit them through a wirelessly connected display screen.

how do wireless projectors work

Such a system can be expanded by using multiple projectors connected to one laptop or one computer, enabling wireless projection in multiple rooms.

This concept is called a multiple-projector system. There are also projectors that can be used to connect an iPhone or iPad to the projector for streaming media.

That’s how all of the wireless projectors work including Epson and BenQ wireless projectors.

What is the advantage of wireless projectors?

The biggest benefit of wireless projectors is that there are no wires or cords to deal with. In this regard, wireless projectors are more environmentally friendly than traditional projectors.

Another benefit is the cost savings. Wireless projectors can be less expensive than their wired counterparts because there are no additional cables and plugs needed for the video signal conversion.

Wireless Projector Connection Option

Wireless projectors can connect to the source device wirelessly via Wi-Fi or Bluetooth.

Wireless Projectors typically use Bluetooth to communicate with the source device. This means that there are no additional cables or plugs needed to receive the signal from the display, as in Wi-Fi projectors.

The downside of this is that there is a limit on how far you can move from your display, while wireless connection extends it up to about 75 feet (20 meters). Due to this limitation and cost of connectivity, wireless projectors are mostly used in conference rooms and home cinemas as home theatre devices for HD video playback.

Wireless Projector Connection Option

Since wireless projectors require a separate power supply for the wireless transmitter, the average power consumption is 2.2 watts.

There are few cons of wireless projectors. One is that the devices are still relatively new and relatively expensive. The quality of the image is far superior to what can be achieved with an HDMI cable, however, as the image is generated and transmitted by the computer, there is a possibility for latency due to signal lag.

Another disadvantage is that wireless projectors are more susceptible to interference than traditional projectors. This means that you cannot place them too close to each other or use them in areas having low signal reception.

Another disadvantage of wireless projectors is that they are not completely wireless; there will always be a wire connecting from the source device to the projector or router.

How to connect wireless projectors to laptops & desktop PC

  1. Connect the wireless projector to a computer via an HDMI cable.
  2. Turn on the wireless projector and connect it to a Wi-Fi network with an active internet connection.
  3. Go to the source device and enter the display settings for it to talk to the wireless projector via its HDMI input port.
  4. Click on a source or video file you want to view, which will be sent to the wireless projector for display without any wires or cords being used.

Why should you use wireless projectors?

Why should you use wireless projectors?

Wireless projectors enable you to control your media sources, TVs, and even sets of speakers wirelessly. There are a variety of wireless projectors available in the market which is helping in increasing the popularity of this technology.

For most desktop computers, a wireless HDMI solution offers a better experience when switching between PCs and laptops as it avoids the hassle of cables and plugs.

For instance, on a home theatre setup, it becomes very convenient to access multimedia content on multiple screens at the same time without any trouble or hassle as there are no wires running across different rooms (in case they were using wired connections).

Moreover, wireless projectors have minimal power requirements and hence can be used in areas where regular projectors will not work due to lack of signal reception.

Cable Free:

Wireless technology is the future of connectivity; the possibilities are endless. In case it is HD streaming, it is pretty evident that we won’t be using wires in the near future for this purpose.

Media consumption would be at its best in such cases as it offers an option to sit anywhere on any sofa in the room and watch a movie on multiple screens without any limitations or restrictions.

There are many benefits of using wireless HDMI technology for your home entertainment experiences such as uninterrupted streaming, reduced friction from connecting wires, and no need for using an expensive cable when you want to watch a movie or play a game with a friend.

Better for portability

One advantage a wireless projector offers over transmissive displays that often use lots of electricity and produce heat is that it is less likely to produce any audible noise or heat.

This makes it more portable as it can be carried to any location without much trouble.

Types of Wireless Projectors


There are numerous scenarios where wireless display technology comes in handy. The most common one among them is the flexibility to connect multiple devices wirelessly at one time.

For instance, if you wanted to connect both your PC and laptop at the same time wirelessly, you don’t have to worry about tangled wires or connectivity problems.

Uses less power

In the case of an outdoor presentation, a wireless projector is considered better as it does not require any source of electricity such as a plug-in. All you need to do is to set it on time.

Low cost on installation and wiring

Due to its simple wiring process, wireless display technology saves money that would otherwise be used for re-wiring your home entertainment center.

All you have to do is plug in the transmitter and receiver which connects the device with your TV or monitor which reduces the amount of labor involved while setting up the screen system too. This also means fewer reviews from hiring an electrician for installation purposes.

Types of Wireless Projectors

There are four basic types of wireless projectors:

  1. Business projector
  2. Home video projector
  3. College projector
  4. Gaming projector

1. Business projector:

Business projector

Business projectors are used for presentations in corporate offices, colleges, schools, and other institutions. Business projectors are usually installed as permanent installations.

They work on a different type of wireless transmission system that uses radio waves instead of infrared or light. They mainly use 24GHz frequency which is the same as Wi-Fi so they can easily connect to all Wi-Fi devices around their place of installation.

This kind of projector usually has a built-in screen so you don’t need to purchase one separately. It has an integrated speaker system and remote control to help you control the projection better.

2. Home video projector:

Home video projector

Home video projectors are used for home entertainment in bedrooms or theatre rooms. Also known as OLED or LED projectors, they are small, lightweight, and energy-efficient. They are designed to be portable so that you can move them from one room to another with ease.

These projectors can also connect to a laptop or desktop computer with an HDMI cable and the images will be transmitted wirelessly to your TV using Bluetooth or Wi-Fi connectivity.

You can also save space on your walls by installing a wireless screen which is easier to install when compared with other types of screens like LCD, plasma, etc. The home video projector is mainly used for viewing movies, sports games, TV shows, and educational programs.

3. College/School Projector:

College/School Projector

College or school projectors are used for classroom presentations, lectures, and speeches in colleges and schools. It is mainly installed as a permanent system in classrooms.

However, it can also be configured to be temporary installation with the help of a wireless projection screen module which can be easily moved from one room to another for easy switching of different images and videos without any hassle or setup required.

These projectors are mainly used in universities and colleges where there are many students who need better quality images at different angles during the day so that they can stay focused on their studies while doing assignments or taking tests.

4. Gaming projector:

Gaming projector

Gaming projectors are used to play video games. They are designed to be portable so you can use them anywhere if you want to play a game with your friends. These projectors are light in weight and have a sleek design so that they can be carried anywhere you go without any hassle.

The gaming projector is mainly used for playing games or watching movies in your bedroom, study room, or living room. It is also used by gamers who play tournaments because it gives them the option to play games anywhere they go without the need for a separate TV screen or monitor.


In the end, wireless projector technology has significantly changed the way we view our daily lives. It has made our lives better in terms of entertainment, connectivity, and even the environmental factor as it is a renewable energy source. It is also cost-effective and helps in saving time as wires or cables can be eliminated.

Wireless projectors are still a relatively new concept as compared to other types of display technologies but they will soon become popular because of their benefits without any stress or glitches.

With more companies entering this market with their own innovative ideas and products, it will only increase the demand for wireless projectors further and create a better future for all kinds of communication devices.


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