Your master passcode is the 4-digit number that we pre-program into your system if you have our Plug and Protect service. This code has 3 uses:
1) Disarming the panel.
2) Verbally canceling dispatch when the Central Station calls to verify an alarm.
3) Verifying your authority to make changes to your account when you call the Central Station (updating phone numbers, zone list, address, etc.)