The "Master User" is the first fingerprint programmed to the lock and is needed to add new fingerprints, delete finger prints and to do a "Master Reset" (delete all fingerprints including the "Master User").
"Master User"
The "Master User" is the first fingerprint programmed to the lock and is needed to add new fingerprints, delete finger prints and to do a "Master Reset" (delete all fingerprints including the "Master User").