HDMI multi-R4 is the receiver for HDMI Extender HDMI multi.T4, which uses an Ethernet cable to extend HDMI signal with transmission distance up to 70 meters and resolution up to 1080p. The TX device has a built-in Edid Auto Backup feature that can store the desired resolution and restore it at any time. The RX device has a built-in HDMI connector that allows the receiver to connect directly to an HDMI screen without requiring external power.