AccuLink Zone Expander Panel, Required w/ More Than 4 Zones Dimensions: 8.0" W X 9.3" H X 1.9" D Type: Zone Panel

American Standard Vaiable Speed Indoor Unit (Air handler/Gas furnace) requiredIncludes 4-Zone Communicating Zone Panel with discharge air sensor, static, pressure transducer and housing, supply & return air static probes and connecting tubingAutomatically sets maximum CFM per zone and limits max static per zoneCompatible with 24 Volt systems with the addition of 24 Volt relay panelControls 24 Volt power open, power close modulating dampersAuto detects installed dampers and wired sensorsRequires field supplied 24 volt power supplyUp to eight 1.5 VA dampers can be wired in parallel to each zoneBacklit LCD display