You can find full versions of the Gateman V20 manual through these resources: Gateman V10-V20 French User Manual
The lock automatically secures itself 2-5 seconds after the door closes. gateman v20 manual
A: Pressing the reset button (often found via a pinhole) is similar to restarting a computer. It reboots the lock's internal electronics to resolve glitches. It does not delete your PIN codes or card registrations in most cases. It simply turns the lock off and on again. To perform a factory reset that deletes all data, you typically need to follow a specific sequence described in the advanced settings section of your manual. You can find full versions of the Gateman