I like the how-to video for setting the combination. How do I open the U-lock hasp to secure it to the door, hose bib, etc?

Simply rotate the combination given when you PURCHASED the lock......pull....and it opens. Also, your own combination number is easy to set with knob inside of unit.

My house key is 2.5 inches long X 1 inch wide and shaped like a car key. Would my house key fit in this product?

The box is 3" x 2 1/2" x 1 1/2" deep, plus some additional space at the top. You should be able to fit the key in.

Can the code be changed?

Yes, easily. When you open the keybox you slide a lever over and then change the combination to anything you want, then slide the lever back and you are done. So you can use the keybox at different properties and never have the same code.

How does this work? Want to use it when I leave an elderly relative home in case fall alert is triggered.

It is a sturdy combination lock which you attach to the outer door handle. Give the customizable combination to your fall alert company, local emergency personnel, and other trusted persons. It works great

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Master Lock Key Lock Box for House Keys – Outdoor Portable Combination Lockbox with Resettable 4 Digit Code, Weather Resistant Durable Metal Body, Holds 5 Keys, 5400D Black

Product ID: 2029903

Details

Brand
Master Lock
Item dimensions L x W x H
1.5 x 3.25 x
Lock Type
Mechanical
Material
Metal
Special Feature
Weather

🔒4-digit resettable combo

🌧️weather-resistant metal body

🗝️holds up to 5 keys

AR$3629

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Argentina.

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Description

🔐 Unlock peace of mind with smart, weatherproof key control!

COMPACT YET SPACIOUS - Holds up to 5 standard house keys in one sleek, portable lock box.
TRUSTED BY PROS HOSTS - Ideal for realtors, Airbnb hosts, and families managing secure key access.
SCRATCH FREE INSTALLATION - Vinyl-coated shackle fits most door knobs and gates without damage.
SECURE ACCESS ZERO HASSLE - Resettable 4-digit code lets you control who enters—no keys to lose or copy.
BUILT TO BRAVE THE ELEMENTS - Weatherproof metal body and shutter door protect your keys rain or shine.

The Master Lock 5400D is a durable, weather-resistant outdoor lock box designed to securely store up to five house keys. Featuring a resettable 4-digit combination lock and a vinyl-coated shackle, it offers flexible, damage-free installation on most door knobs and gates. Perfect for homeowners, realtors, and rental hosts, it ensures controlled access without the hassle of physical keys.

Specifications

ASIN	B0002YP1VC
Additional Features	Weather Resistant
Best Sellers Rank	#204 in Office Products ( See Top 100 in Office Products ) #2 in Security Lock Boxes
Brand Name	Master Lock
Color	Black
Connectivity Protocol	Wi-Fi
Control Method	Touch
Controller Type	Hand Control
Customer Reviews	4.7 4.7 out of 5 stars (25,314)
Finish Types	Powder Coated
Global Trade Identification Number	00071649214516
Included Components	Lock Box
Item Dimensions	1.5 x 3.25 x 6.25 inches
Item Type Name	Lock Box
Item Weight	16 ounces
Lock Type	Mechanical Code Lock
Manufacturer	Master Lock
Manufacturer Part Number	5400EC
Manufacturer Warranty Description	Limited Lifetime Warranty
Material Type	Metal
Model Name	5400D
Model Number	5400D
Number of Pieces	5
Recommended Uses For Product	Household
Shape	Rectangular Cylinder
Smart Home Compatibility	Not Smart Home Compatible
Style Name	Standard Shackle
UPC	071649214516
Unit Count	1.0 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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AR$3629

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Argentina.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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