Master Lock 5900D Combination ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$39.18
$37.79

Master Lock 5900D Combination Portable Safe

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Model: 5900D
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$39.18
$37.79
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Product Specs

Product Group:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Department:
Door Hardware

Master Lock 5900D – Frequently Asked Questions

1) Does the Master Lock 5900D portable safe need a key?
No key. The 5900D portable safe uses a set-your-own combination, so there's nothing to carry, hand off, or replace when a staff member leaves. For a front desk, a jobsite trailer, or a dorm resident holding a phone and a wallet, that's the practical difference from a keyed lock box: whoever needs access gets the numbers, not a piece of metal.
2) Can the Master Lock 5900D safe be secured to something so it can't just be carried off?
Yes, and that's the main way it's used. The 5900D has a cable that either wraps tightly around the safe itself or loops around a fixed object, so it can be tethered to a bed frame, a bench leg, a locker rail, or a rack. The same cable doubles as a carrying handle when you want to move it. It's a deterrent tether, not a bolt-down anchor, so pair it with something genuinely fixed.
3) Can you charge a phone or run earbuds while it's locked in the 5900D?
Yes. The 5900D has a dedicated ear bud and charging cable access port, so a cable can pass out of the closed safe. That's what makes it work for a locked phone charging at a poolside cabana, a locker room, or a hotel amenity area while the guest keeps listening.
4) Will the Master Lock 5900D hold up outdoors, at a pool or on a boat?
The 5900D is water-resistant construction, which covers splash, spray, and damp poolside or dock use. Water-resistant is not submersible, so don't count on it if it goes over the side. For beach, pool deck, and marina amenity programs that's the intended duty.
5) Is a portable combination safe like the 5900D the right choice, or do I need a wall or floor safe?
The 5900D is a portable, cable-tethered safe for small valuables that move with the person: campus housing, offices, travel, recreation, and leisure settings. If you need fixed in-room security that a guest cannot remove at all, or fire protection for documents, that is a different product class entirely. Buy the 5900D where the value is convenience and deterrence at a locker, bunk, desk, or poolside, and where the item leaves with its owner at the end of the day.
How fast can I get the Master Lock 5900D delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Master Lock 5900D come with a warranty?
Absolutely. The Master Lock 5900D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Master Lock 5900D?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Master Lock 5900D from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.

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