M&S Systems DMC3-4 3- or 4-Wire Retrofit Music/Communication System Master Unit (White)

• Designed to provide updated functionality & styling in home with existing intercom systems;• Runs on existing wires;• Replaces 3, 4 & 6 wire ;• 30W RMS power drives up to 15 room stations & 3 door speakers;• 30% smaller than previous models;• 2 music source inputs & 8 AM/8 FM music station presets;• Stereo upgrade path with optional power amp;• Remote speaker volume & source control ;• Intercom-only & door release features;• White;• 15.25" x 15.31";