Ademco Vista XT Codes

Master Code User 02 (Master only changed by downloading)
Secondary Codes User 03 to 15)
Duress Code 1 digit above any code, if code is 1234 Duress is 1235

You cannot pause more than 2 seconds while entering below commands or it won’t work
Add Code Master Code + 8 + User (03 to 15) + New Code
Erase Code Master Code + 8 + User (03 to 15) + Master Code again
After above commands keypad should beep indicating successful, if not try again