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Linear m&s sytems #DMC4RS retrofit for 4 wire system

You are Purchasing a New Linear #DMC4RS Retrofit Speaker for a DMC3-4. This product is used for Residential and Small Commercial Projects. Retrofit for DMC3-4, 4-wire intercom systems. Volume control sets sound level. Communicates with door speakers, other room stations, and master unit. Power, volume, and scan control of the master unit s built-in AM/FM radio receiver. Scans auxiliary, CD, AM, and FM sources. Can activate door release mechanism or a security system s panic alarm . This item is Sold and Priced per Speaker.
Linear m&s sytems #DMC4RS retrofit for 4 wire system