An HDMI extender consists of two main parts: a transmitter and a receiver.
The transmitter connects to the HDMI source (e.g., a computer or Blu-ray player) and converts the signal for transmission over the network cable.
The receiver is connected to the display (e.g., a TV or projector) and converts the signal back to HDMI.
The "150M" in the product name indicates that this specific extender can transmit the signal up to 150 meters.
HDMI extenders are useful for situations where a standard HDMI cable is not long enough to connect a source and a display, such as in a large room or between different room