- 1). Press "9" and enter the current system master code to access the programming menu on the Concord alarm panel.
- 2). Push and hold "B" until the display reads "User Codes." Press "#." The display will read "Regular User Codes" or "Reg Codes."
- 3). Press "B" repeatedly until "System Master Code" or "Sys Master" appears on the display, then press "#."
- 4). Enter your new four-digit system master code and press "#."
- 5). Exit the programming menu by pressing "*," "00," "#."
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