An HDMI Extender that works over LAN with an adapter allows you to extend the HDMI signal over a long distance using an Ethernet (LAN) cable, such as a Cat5e or Cat6 cable, instead of traditional HDMI cables. This setup is beneficial in situations where HDMI cables can't reach the desired distance or when you want to avoid running bulky cables through walls or ceilings.

For your specific case, an HDMI Extender 120m over LAN with an adapter means that you can transmit HDMI signals up to 120 meters (about 394 feet) over a standard Ethernet cable, allowing you to send high-definition video and audio across that distance.

Here’s a quick overview of how it works:

Components:

1. Transmitter: Connects to the HDMI source device (e.g., a laptop, gaming console, or Blu-ray player).
2. Receiver: Connects to the display (TV, projector, or monitor).
3. Ethernet Cable (Cat5e or Cat6): Used to link the transmitter and receiver units.
4. Adapter: Depending on the extender model, there might be a power adapter or additional converters involved, particularly if you’re using a POE (Power over Ethernet) setup.

Features:

• Distance: Supports HDMI transmission over up to 120 meters.
• Resolution: Often supports resolutions up to 1080p (Full HD), though some models can handle 4K at shorter distances.
• Signal Integrity: By using LAN cables, you can avoid signal degradation over long distances that typically occurs with regular HDMI cables.
• Easy Setup: Most extenders are plug-and-play, requiring minimal configuration.

Benefits:

• Long-distance transmission: Extends HDMI signals to far locations, ideal for large venues or multi-room setups.
• Cost-effective: Ethernet cables (Cat5e, Cat6) are more affordable and easier to manage than long HDMI cables.
• Minimal Interference: Ethernet-based transmission often handles interference better over long distances compared to standard HDMI cables.

Would you like more information on specific models or how to set up the system?