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I think that is a biometric kind that registers a fingerprint. Did you try your fingerprint on it?
If the batteries give out, the fingerprint setting may be randomized and/or wrong and/or irrelevant to getting it open.
(Feel welcome to tell me how you tried to open it, though... and if it has an emergency key, I would recommend trying it.)
(Also: did it make the right beep and/or LED light reaction, when you entered the code, but then not open? it might be the lock mechanism is jammed, if it does react right but doesn't open.)