bout this item * Up to 500m Long Range Transmission :- HDMI wireless transmmitter and receiver, equiped with dual antenna design,2.4/ 5.8G high-speed transmission and strong signal. Extends 1080P full HD HDMI signal wirelessly up to 656ft in an open field without barrier. Note: Walls, bricks or glass can shorten signal coverage or cause severe signal loss. * Loop Out on Wireless HDMI Transmitter :- Additional HDMI loop-out output port on the wireless transmitter end, allows you to add a local Display for Monitoring, transmitting security camera feeds. * 1080p Wireless Transmission :- Wireless HDMI sender and receiver support resoloution up to 1080p 60Hz, built your crystal clear 1080p home theater, enjoy colorful and high sound quality without noise. Also convenient for big conference, watching sports or movies at home, outdoor pool party etc.