Specifications
DMC3-4 Intercom Systemswww.linearcorp.com 800.421.1587
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FEATURES
• White, almond, or black faceplate 
• Retrofit for 3-wire and 4-wire intercom systems 
• Supports up to 15 room stations 
• Supports up to three door speakers 
• 30 watts (RMS) maximum output power 
• Eight AM and eight FM radio station tuner presets 
• Remote volume and source control from 
  room stations 
• Intercom-only and door-release features 
• Programmable monitor override 
• Automatic on/off feature 
• Optional 3-note and 8-note door chime
3 & 4-Wire Retrofit Masters
DMC3-4 
Music/Communication Retrofit System Master
ORDER # DMC3-4 / DMC3-4A / DMC3-4B
The Model DMC3-4 Music/Communication Retrofit 
System Master is a full-function intercom and music 
distribution system designed for retrofit applications. 
The master unit can replace older intercom systems 
that use 3-wire or 4-wire connections to the room 
stations. The system supports up to 15 room stations 
and up to three door speakers. The built-in AM/FM 
radio tuner allows setting eight AM station presets 
and eight FM station presets. The backlit liquid crystal 
display shows the operation mode, audio source, radio 
frequency, volume setting, and time. With the optional 
Model DMC1 iPlay iPod dock installed below the master 
unit the system provides three different media playback 
options: CD player, a dock port for your iPod, and an 
audio line input for other MP3 devices.
DMC3-4 (White)
DMC3-4B (Black)DMC3-4A (Almond)










