Ademco 4120OEC Codes
| Master Code | User 2 (Master Code only changable by downloading) |
| Secondary Codes | User 3 to 8 |
| Duress Code | 1 digit above any code, if code is 1234 Duress is 1235) |
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| Add Code | Master Code + 8 + User (3 to 8) + New Code (Keypad should give 1 beep) |
| Erase Code | Master Code + 8 + User (3 to 8) + Master Code (Keypad should give 1 beep) |
| After above commands keypad should beep indicating successful, if not try again | |
| You cannot pause more than 2 seconds while entering below commands or it won’t work | |