Gale, Replacing an old Broan system you will probably have to replace all the room stations. Back 14 years ago the Broan System was very similar to the M&S Intercom Systems www.mssystems.com. I'm going to guess its a 4 wire system. Call M&S (Linear) and ask for a local dealer. The system you could put in place of your Broan System that will work on existing wire would be a DMC3-4 and yes you will probably have to replace all room stations. They will probably be a different size but M&S (Linear) does offer plates to cover the larger holes. If you have further questions you can reach me at IntraSonic Technology, Inc. www.intrasonictechnology.com 877-435-0670 or e-mail me at rpinell@intrasonictechnology.com.

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