Question about Sentry Fireproof Safe

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I have a Sentry Safe Model #S3877, wne on holidays when I got back batteries are dead, have no idea where keys & manual i are. Have changed batteries, code does not work. Is there a procedure to do after the batteries go dead

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If you have registered your safe with Sentry - they have the original code. Otherwise a Locksmith will be in order. There is no "Master Unlock" code for safes.

Customer Service Center 800-828-1438


Click Here for instructions on recovering your combination.

Thanks!!

Posted on Jul 16, 2010

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1 Answer

I have a Sentry safe S3877 the batteries were replaced with new it still gives the error beeps for batteries need to be replaced the safe will not open, how can I get the safe to open?


A1 Locksmith Burlingame CA Once you get the error light that means you are entering a user code that was deleted when the batteries went dead . Simply replace the batteries then use the master code in your owners manual to open the safe. Reprogram new user code instructions bottom of this page.

Apr 17, 2013 | Sentry Fireproof Safe

1 Answer

How do I open a sentry s3877 safe when the battery is dead and safe is closed


The factory code combination to your electronic lock will remain in the memory of the unit - even if the batteries go dead. Any use programmed codes will be lost if the batteries lose power. The Sentry programmed factory code is always your default code.

If you do not know your factory code, you can follow this link for your combination retrieval:

http://www.sentrysafeshop.com/Lost-Combination-Sentry-Safe-Combination-p/lost%20combination.htm

Sep 23, 2012 | Sentry Fireproof Safe

1 Answer

We have a S3877 Sentry safe. The battery appears dead so I can't use the code. I also have the key but since the battery is dead it is no help. What can I do?


The factory code combination to your electronic lock will remain in the memory of the unit - even if the batteries go dead. Any use programmed codes will be lost if the batteries lose power. The Sentry programmed factory code is always your default code.

If you do not know your factory code, you can follow this link for your combination retrieval:

http://www.sentrysafeshop.com/Lost-Combination-Sentry-Safe-Combination-p/lost%20combination.htm

Dec 07, 2010 | Sentry Fireproof Safe

1 Answer

Somehow can open my sentry s3877 with the keypad.


A Safe and Vault Tech Will confirm that once you change the batteries the user code will erase and you will now have to enter the factory default that is in the owners manual and then use the programing instructions to program a new user code.

Jan 07, 2010 | Sentry Fireproof Safe

5 Answers

Sentry safe S3877 have key and know combination but battery dead


Use paperclip to push in pin size hole below keyboard and then slide panel to right. Battery box is right there. Replace batteries and then was already to accept code.

Apr 08, 2009 | Sentry Fireproof Safe

2 Answers

Sentry safe, enter codes and nothing


Motorola IC #MC68HRC705 will not reset. Chip is most likely bad. Time to throw this safe out...Thanks for your answers. George

Mar 25, 2009 | Sentry Fireproof Safe

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Safe SENTRY S3877 can not open the door


The door lock could be jammed try shacking briskly to losen lid and latch! akso it may have reset itself and the combo is no good no more and back to the origanal setting it had when you bought it ! ( if its a 911 you can put a screwdriver in where key goes and turn hard counter clockwise)
Good Luck!

Jan 02, 2009 | Sentry Fireproof Safe

2 Answers

Changing the code on my Sentry Safe S3877


how to change the on sentry safe s3877

Sep 29, 2008 | Sentry Fireproof Safe

2 Answers

Sentry s3877 battery compartment broke


I had the same problem with my Sentry S3877. I found the exact 4-battery replacement (with snap attachment on top!) at an online electronics.retailer, but had to purchase a lot of three. I don't need the other two, so I'll sell them for just $6 each to the first two folks to contact me mark@irregardless.net.

Oh, by the way, once the batteries went dead, you lost your combination! When you pop the new battery compartment in, the factory default combination will be in effect. That default combination is in your user's manual. I'm currently searching frantically for mine! Gee, how could I have misplaced it ... I just had it in my hands when I purchased the safe 10 years ago !!!

Anyone know the default combo for the S3877?

---- Mark

Sep 15, 2008 | Sentry Fireproof Safe

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