ST-2 is a dual AM/FM tuner is ideal for any multi-room audio system. Can be used with CAA, CAS, R-NET or A-BUS system. When using RNET compatible systems, tuner information is viewable on UNO-S2 keypads. Use the ST2-RC remote when using the A-BUS system. Stores up to 72 presets with custom naming. Has dual AM/FM streams.