How to modify the master user access code in E-Plex 30xx/50xx? February 16, 2026 21:39 Updated How to modify the master user access code in E-Plex 30xx/50xx?ResolutionRequired User Level: Master To change the factory code or current Master Code, follow the next three steps: Put lock into Pushbutton Programming Mode. Use the command, 000, for Master, then the new Master Code number. You must use 8 digits between 00000000 and 99999999 as follows: 000#MMMMMMMM#, we’ll use 000#87654321# as an example. Enter the Master Code again 87654321# for confirmation. Example of Complete Entry: 000#87654321#87654321#. Key in another # to indicate the end of programming. After that, you will always use your own Master Code. Please write the code down and keep in a safe place. The factory code is no longer valid.Applies ToE-Plex 30xx/50xx Series Locks Related to E-Plex Access Codes Download Article