DoorKing 1812 Plus - Manual (Page 36)

2.6 Miscellaneous
2.6.1 Restore Defaults
This step will restore the factory set defaults for each of the programming parameters.
WARNING: Once started, this sequence will program all values to factory default.
1. Press * 9 0 and enter the MASTER CODE. [ * 9 0 _ _ _ _ (beep)]
2. Press 9 9 9 9 then press *. [ 9 9 9 9 * (beep)]
3. This sequence will end itself automatically. [beeeeeep]
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