This is a 4K2K30 18x18 HDMI Matrix Switch supports both HDMI 1.4 & HDCP 1.4 compliant. It can support up to 18 HDMI inputs with the EDID key and 18 HDMI outputs, it’s a perfect matrix switcher to use the with the 4x4 splicing video wall(this matrix switch couldn’t support the Video Wall), it can control via mobile phone, iPad and WEB bi-directional control. The 9x9 HDMI Matrix Switch supports advanced digital audio formats such as Dolby True HD and DTS-HD Master Audio. Each source is accessible at all times from any display by using the included iPad App, the RS-232 port or using the front-panel push buttons. The matrix does not have IR nor a remote control but can be controlled with its iOS and Android App. It also has optional Control4 & Elan Drivers.