A recognised standard for the wireless transmission of data between computers or other electronic devices. The IEEE 802.11n standard allows up to 600 Mbit per second gross; newer devices use Wi-Fi 5 (802.11ac) or Wi-Fi 6 (802.11ax) and are considerably faster. Since this standard, it has also been possible to transmit images and videos wirelessly via WLAN. With projectors, there are three different ways to transmit the image wirelessly.
1. Using an optional WLAN stick.
A WLAN stick from the manufacturer is connected to the projector via USB. This makes the projector WLAN-capable, and it can be fed with data from a laptop using additional software. Video data is usually only transmitted in poor quality, but images and presentations work perfectly.
2. Projectors with built-in WLAN
Some projectors come with a wireless LAN function built in as standard. These projectors are supplied with an external transmitter box that can be connected to the source devices via HDMI. The transmitter unit then establishes a private data connection to the projector and transmits videos and images in Full HD resolution without loss.
3. Retrofitting wireless LAN with external systems
If the projector has an HDMI port, you can now also retrofit wireless LAN to a projector using external systems. A small box or stick is then connected directly to the projector's HDMI port, and a separate transmitter unit handles signal transmission.
Depending on the software supplied, projectors equipped with wireless LAN can offer a wide range of functions, such as group use. Since Windows Vista (network projector function), laptops have even theoretically been able to control the projector without additional software.
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Further guides:
- Projector buying guide using the BEAM method – overview of all guides
