Bought Sentry Safe S3877 with no code at Estate Sale, how to use with just the key

I picked up this safe at an estate sale. The door was open and locked. The key was there but they did not know the code. This video shows what I did to use this safe with just they key, and no code.

[@jamesotisjr2322]

if you have any electronic and mechnical skills: put one or more DB25 connectors on the back. connect the solenoid across two of them, and if you know the combo put another two across the battery terminals. this gives you a way in and a way to get in normally if the batery dies

[@RebelMystic9]

But how did you unlock it to get to the inside panel?? I have the key, my dad forgot the combo

[@rossmiller4228]

Just a funny old memory. 40 plus years ago I was working for a guy that bought this old vacated building. It had been an empty building for several years, prior. There was an old pay phone on what appeared to be a break room, wall. I could hear change in that old pay phone and the thing had to weigh every bit of 50 pounds. I'm imagining that there has to be $100 or more in this thing. I spent $50 on diamond tip drill bits to get this old phone box off and opened. When I finally got that box off it had $2.30 in it. Obviously I was not the sharpest knife in the drawer in my late teens.

[@tomwall2361]

How strong of a neo magnet do you need to defeat the solenoid spring? Will a 550lb fishing magnet do?

[@bobbyd6680]

125# Rare Earth magnet works on most. I do believe that they made changes to the newer models to defeat this method.

[@marlionisaac8072]

A lady have the same safe as you do with the key lock in the Safe and the battiers are dead. How can she unlock the Safe?

[@nikolayvyalykh8765]

I have same safe I have key but no code and it is locked so how I can open it???? Please

[@GOD-dk1nq]

The barcode with your factory codes on the solenoid that you taped the pin down on. unscrew it since the stickers hidden behind the bracket housing

[@lesschattermoresplatter5769]

That’s a wasted 4:50 of my life I’ll never get back.

[@judithg84]

To notarize your bank can do it for free

[@eloisalara8470]

What kind of key is it? I lost mine and can’t find a replacement

[@bobbyd6680]

Don't know if this is still relevant for you but the key needs to be replaced by the manufacture with the notarized letter and your serial number listed on the door sticker.

[@patricks.hafersr.8723]

Buyer beware those safes can be picked open with a magnet in seconds. Checkout lock picking lawyer.

[@cerace9120]

Electronic part of look can be circumvented with magnet, but the key segment still needs to be acted on. lockpick and magnet both will defeat this lock

[@tomwall2361]

@@cerace9120 thanks for the info. Do you know where the solenoid is located on the sentury model S3803? Wondering where to leave the magnet

[@ryanl3184]

So I just found one of these in a neighbor's trash and I must say: this safe is a ridiculous horrendous piece of crap! The tubular lock is easily opened with a $20 chinese tubular lock pick, and the solenoid you taped over can be activated by accessing the black and white wire underneath the keypad, behind the battery. Simply apply voltage to the wires (from the outside of a fully locked safe) and the solenoid pops right open! Why on earth they would leave those wires exposed I have no f'n clue! Also you can order a notary stamp press online and notarize the letter yourself- its total bullshit that they actually require that, after putting so little care into the design of this safe- and then punishing anyone who buys a second hand product of theirs.