mteele Posted April 7, 2014 Share Posted April 7, 2014 Ended up installed a DSC system instead of the Concord4, since thats what my installer was more familiar with after my Concord4 panel was damaged and needed replacing. I paid $58 for the RS-232 interface module and $200 for the GSM module. I am willing to let them each go for HALF of what I paid. Please PM me if interested. Link to comment Share on other sites More sharing options...
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