As long as your FOURKAY HDMI switch is connected to the same network as your phone you will be able to use this app to control the switch. Select which input should be routed to each display, recall preset configurations, manage your Sky Q and Sky HD or put the switch into standby & wake it up all without having to have a separate remote control at each TV.
You will need to know the IP address of the HDMI switch on your network. Sky boxes will need to be connected to same network as the matrix.