Hello, Have just moved into a new house with a DAS NX-12 alarm. It was monitored but no longer. I wish to change the phone numbers it dials- I have a user code but not the master code. Can anyone help to reset the mastercode?
Hello, Have just moved into a new house with a DAS NX-12 alarm. It was monitored but no longer. I wish to change the phone numbers it dials- I have a user code but not the master code. Can anyone help to reset the mastercode?
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