The Atlona AT-UHD-EX-100CE-TX is a 4K HDBaseT HDMI transmitter specifically designed for sending high-definition video and audio over long distances. With the ability to power itself using Power over Ethernet (PoE), it offers convenience and flexibility for installation without the need for a separate power supply unit. Weighing only 2 lbs, this transmitter is compact and easy to transport, making it suitable for various professional audio and video setups.