So you would like to send 4K video from a HDMI source to a TV or projector without a cable? The IOGEAR Wireless 4K UHD HDMI Extender can help. It extends your signal up to 60 ft, delivering audio and video at near-zero latency. It supports resolutions up to 3840 x 2160 @30Hz.
You don’t need a separate WiFi system to get this to work. It is HDMI 1.4 & HDCP 2.2 compliant and supports dual power options.