How to unlock sentrysafe residential/hotel safe model

SOURCE: i forget my combination sentrysafe ksw3220

First, find your safe’s Serial Number. The Serial Number is printed on the small label on the right side of safe ( on paper tag near hinge) or under handle. just note your model # and the serial#. A good locksmith should be able to help you

SOURCE: i have a sentrysafe t6 mode i cannot open as battery is dead

Locksmiths install sentry safe batteries this way
slide open the battery cover located just below the keypad.
Insert a paper clip or pen point into the small hole in the cover. Push in while sliding cover to the right. Disconnect and remove the sentry safe battery holder Insert the 4-batteries as indicated.
reconnect the connector and put back the battery holder. Slide the cover back in place.
How do I insert the batteries on my advanced electronic lock safe? On the newer model Fireproof Sentry Safes my locksmith recommended me To install batteries,
turn the electronic lock case to the right and remove. Insert four new batteries as indicated, replace the electronic lock case and turn to the left to reassemble.