Multicast Kit The GWHDMS52MBK4 is a Multicast kit which includes four (4) additional wireless HD receivers (Part# GWHDRX01) for support of four (4) wireless locations. IOGEAR's Long Range Wireless 5 x 2 HD Matrix PRO with Multicast is the first to send uncompressed HD 1080p up to an astonishing 200 feet, including the ability of multicasting up to a total of 4 wireless receivers! Wireless Matrix The Wireless 5x2 HDMI Matrix PRO is setting a new standard in wireless connectivity, flexibility, convenience, and décor. The wireless matrix feature is the biggest breakthrough in wireless A/V solutions today. This means you can watch cable TV in the living room while the bedroom independently selects a Blu-ray® movie to watch wirelessly at the same time. It's capable of streaming uncompressed Full HD 1080p with support for 3D content and digital audio up to 200 feet* away within the home or desired set up. Multicast Capability Expand beyond one wireless display to multiple wireless displays with Multicast capabilities. Simply add up to 3 additional wireless receivers* broadcasting to a total of 4 wireless receivers from the same HD video source.