Samsung SHS-3420, User Manual, Page: 16 / 28

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Miscellaneous Information
Reset to Factory Default
Resetting the lock will delete all registered information.
Note
: After Reset, let the sensor detect the magnet to set the hand type again.
All registered Master and user data will be deleted, and the lock will be reset to default settings.
(Refer to the Program section on Page 12 for default values.)
Press the [Registration] button for 10 seconds.
Successful : Ding dong
→ Ding ding
→Ding ding
Enter the current Master PIN Code, and press
the [ ] button.
Successful : Ding dong dang
Failed : Ding dong ding dong
Restart function
Note : Restarting does not delete registered information.
If there is no response after pressing the [Wake Up]
button,
use a pin to press the [Restart] button on the right of the external
power contact of the Exterior Unit.
9V Battery Emergency Power
Continuing to use the lock without replacing the batteries when required will lead to lock malfunction.
Touching a 9V DC battery to the external power contacts on the under-side of the Exterior Unit will allow
for temporary access (continue touching the battery to the contacts until the lock is open).