Master Lock Key Lock Box for House Keys – Outdoor Portable Combination Lockbox with Resettable 4 Digit Code, Weather Resistant…
Best for
Best overall
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Current price
$24.95
Updated Jun 27, 2026 · 1 min read
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the verified-purchase reviewers we read, the Master Lock 5400D is the clear consensus favorite in this group, carrying a 4.7 average over roughly 25,000 ratings, which is the deepest and most consistent buyer signal among all candidates. Shoppers describe it as a no-frills, durable combination box with a resettable 4-digit code and a weather-resistant metal body that holds up to five keys, hung from a door handle, gate, or railing. It's important to be transparent: the supplied data contained no independent lab testing, expert teardown, or specialist-forum discussion for this product, so this verdict rests almost entirely on retailer-review volume.
What reviewers liked
- Deepest verified-purchase signal in the category (4.7 across ~25,000 ratings)
- Weather-resistant metal body with resettable 4-digit code
- Portable hanging-shackle design works on handles, gates, and railings
- Holds up to five keys at a low price point
Where it falls short
- No independent lab testing or expert review present in the supplied data
- Mechanical combination box is a deterrent, not high-security against tools
- Portable design is easier to remove than a wall-mounted unit
- No app, logging, or shareable-code features
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Across the verified-purchase reviewers we read, the Master Lock 5400D is the clear consensus favorite in this group, carrying a 4.7 average over roughly 25,000 ratings, which is the deepest and most consistent buyer signal among all candidates. Shoppers describe it as a no-frills, durable combination box with a resettable 4-digit code and a weather-resistant metal body that holds up to five keys, hung from a door handle, gate, or railing.
It's important to be transparent: the supplied data contained no independent lab testing, expert teardown, or specialist-forum discussion for this product, so this verdict rests almost entirely on retailer-review volume. That volume is unusually large and stable, which is reassuring, but Amazon averages are gameable and should not be mistaken for a security rating. Reviewers position it as a deterrent for controlled key sharing rather than a high-security safe.
For most households and renters wanting a simple, affordable, well-proven lockbox, the consensus points here first. Buyers needing app control, time-limited codes, or access logs should look at the smart options lower in this list.
- Secure Spare Key Access Without Copies
- Safely store up to five standard house keys in one place, eliminating the need to hide keys or distribute duplicates while maintaining controlled access for trusted users
- Resettable 4 Digit Combination Control
- Set and reset your own four digit combination at any time, giving you thousands of personalized code options for flexible access management without keys
- Built For Outdoor Reliability
- Durable metal body with a protective shutter door shields combination dials from weather exposure, while the vinyl coated shackle helps prevent surface scratches
- Fits Most Door Knobs And Handles
- Portable shackle design fits over most ball, biscuit, and tulip style door knobs, allowing quick installation without tools or permanent mounting
- Ideal For Home, Rentals, And Emergency Use
- Designed for residential homes, vacation rentals, real estate access, and emergency entry situations where dependable, shared key access is essential
- Why Master Lock
- Large capacity key lock box enables secure storage of up to five standard (2 inch) house keys; Shackle fits most ball, biscuit, and tulip door knob styles
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