All MCA products are Ethernet enabled devices allowing for IP based features and control. RIO (Russound I/O) allows Russound IP based control systems to integrate with, control, and communicate bi-directionally through an open protocol. In addition to dedicated keypads and touchscreen control options, the free My Russound App (iOS and Android) controls all Russound Ethernet connected products on the LAN including the MCA-66 and its source components. The MCA-66 features 6 zones of high quality amplification, providing 20 watts of power per channel. Zones 1 and 2 are equipped with fixed or variable line-level outputs for outboard amplification, wireless expansion or subzone use. Additionally, an RS-232 port for integration with serial-connected home automation systems is available for utilization on the rear panel of the MCA-66. Custom audio settings, party modes, do not disturb, source and zone linking, and all-on/all-off participation are standard features. The MCA-66 has alarm and sleep timers, a Home Theater trigger and one 12VDC trigger output for power management and control. Source six can serve as a paging input for connection to a 3rd party paging or phone system. With Russound keypads or touchscreens, the MCA-66 communicates vital information such as preset names, station ID, artist, song titles and album art depending on the capabilities of the source being used. The simpler SLK-1 keypad can also be used for areas where basic control is sufficient such as entry/exit areas of a home or business or any area where the My Russound App might be the predominant control interface. Note: The MCA-66 is part of the Russound Certified Installer Required Program and can only be installed and configured by a Russound Certified Installer.