You will need to keep the battery held onto the connection points while you type in your code and open the door.
Sentry safe lost key and battery dead.
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Open door remove battery compartment cover in direction arrows are pointing.
Do not mix old with new batteries or mix brands of batteries.
My sentry safe battery is dead and i lost the key.
I figured out this neat trick with a magnet.
I m not based in the us so cant order a replacement key from there.
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Insert 4 batteries as indicated do not use rechargeable or non alkaline.
Find your model serial number.
If your batteries are dead you will need to hold a 9v battery like the ones you get in smoke detectors to the connection points at the front of the safe this should deliver the power you require to enter your code on the keypad.
If your safe battery is low the latch mechanism won t open even if the code is correct and shows a green light.
Change the batteries and put it back on opposit how it.
Well it doesn t take a locksmith with decades of experience or the sentry safe combination all you need is a magnet.
Different types of magnets will open up most hotel rooms most.
Insert key and turn counterclockwise left to unlock door notch on key in upward position.
Favorite answer the batteries on your safe should be behind the key pad.