M&s Systems 3- Or 4-wire Retrofit Music And 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";