Master Lock 5400D Review (Bought, Used & Reviewed)

Key Takeaway

  • The Master Lock 5400D Key Lock Box is a value for money product that is made of good quality construction material and provides reasonable resistance to picking and decent weather resistance capabilities.  
  • It scores high on ease of use and mounting options.
  • Weather resistance abilities could have been better but at that price point, it is a good catch. 
  • Other worthy alternatives are Kingsley Guard-a-Key Lock Box and Kidde AccessPoint.

The last time I left keys under the doormat was over a year ago since I had purchased and installed the Master Lock 5400D key lock box. While I am generally satisfied with the key lock box, I won’t deny that it has encountered a few issues. 

In this article, as promised, after using this key lock box for over a year now, I’m here to provide you with a comprehensive review. Furthermore, I’ll share worthy alternatives in the market and do a very brief comparison between them, offering an honest assessment to assist you in making an informed decision.

Detailed Master Lock 5400d Review

Aspect Rating (Out of 5)
Construction Material⭐️⭐️⭐️⭐️
Ability to with stand Weather⭐️⭐️⭐️
Capacity ⭐️⭐️⭐️⭐️
Mounting Option⭐️⭐️⭐️⭐️⭐️
Ability to resist picking⭐️⭐️⭐️

Master Lock 5400d - key lock box

In this review, we will delve into the key features, advantages, and drawbacks of the Master Lock 5400D Key Lock Box to provide a balanced perspective on its performance and suitability.

Construction Material & Type of Lock: 

The Master Lock 5400D lock key safe body is constructed with durable metal and I’ve had no issues with it so far. I’ve had no incidents of break-ins or if there were any then 5400D stood them all. 

However I found one review online that is both disturbing and scary and makes you think whether key lock boxes are safe or not. However, after using it for over a year, one thing I can definitely say is that the quality of the shutter door is not good. It feels like cheap plastic and doesn’t slide up or down smoothly.

Since it is a combination lock (it was one of my main considerations when I was looking for the best key lock boxes), it becomes really important that the dials are not only smooth to rotate but big enough for clear number visibility. And in this regard, 5400D does a fantastic job.

The dials are at a good height so that we don’t have to bend too much to rotate them. The friction is just right that it doesn’t take effort every time to use the dials.

Size and Capacity: 

The lock box boasts a compact exterior with dimensions of 6-1/4 inches in height, 3-1/4 inches in width, and 1-1/2 inches in depth. Internally, it offers space for up to 5 standard house keys. While the capacity is sufficient for many users, those with a need for larger storage may find it limiting.

Another thing that I don’t like in the Master Lock key lock box is that there are no separate pockets/compartments to hold keys like Supra iBox BT LE.

No separate compartments in 5400D to hold keys

Weather Resistance: 

Lock boxes are used outside and ought to be weather resistant. Any key safe should be able to withstand not only wet climate but also dirt, rust and corrosion. Master Lock 5400D is a mixed bag in this regard.


  • The shackles are vinyl coated therefore it prevents them from corrosion.
  • Entire lock box body (except the front) is rubber coated that provides insulation from rust. 


  • The shutter cover needs to be closed all the time otherwise dirt gets trapped in small crevices which makes rotating the dials a tad difficult. In-fact this is one of the main reasons behind the jamming issue.
  • To prevent water from entering into the inside of the box, the shutter cover needs to be closed. One time I forgot to do it and it was raining heavily and the entire inside was flooded with water. 

Mounting Options: 

This is perhaps one of the most underrated advantages of the 5400D key lock box. The height and the width of shackles is amazing to fit on to any size of door knobs, levers or handles. For example, I wrap it around the door knob and it works just fine. However putting it (around the knob) for the first time took a bit of time.

5400D offers reasonable levels of mounting options


In terms of affordability, the Master Lock 5400D is competitively priced. It provides a reasonable level of security and functionality for its cost, making it an attractive choice for budget-conscious consumers. At the time of writing this article, it was retailing at under $40.

Ability to Get Picked

It provides only reasonable resistance to picking. As I mentioned in this article that every lock or lock box can be picked by a skilled lockpicker but that doesn’t mean that one stops putting up locks.

As is shown by The GOAT (LockpickingLawyer) himself in this video that it can be picked within minutes if not seconds.

Having said that, not every lockpicker is as skilled as him. And if the burglar at your door is as skilled as him, then no lock can deter him.

Some Other Worthy Alternatives

In this section, I’ll compare the Master Lock 5400D Key Lock Box to two other popular key lock boxes: the Kingsley Guard-a-Key Lock Box and the Kidde AccessPoint 001015 Key Lock Box. These comparisons will help you make an informed decision based on your specific needs and preferences.

Master Lock 5400D vs. Kingsley Guard-a-Key Lock Box

Master Lock 5400D vs. Kingsley Guard-a-Key Lock Box

Let’s take a close look at the Master Lock Key Lock Box and the Kingsley Guard-a-Key Lock Box, considering their key features and user feedback.

  • In my opinion, the Master Lock Key Lock Box offers impressive installation versatility, accommodating various door knob styles and allowing for wall mounting. While the Kingsley Guard-a-Key Lock Box also receives praise for its straightforward installation, I believe the Master Lock 5400D outshines it in this aspect.
  • In terms of portability, the Master Lock Key Lockbox doesn’t prioritize it, as it’s typically meant for fixed installations. Conversely, users admire the Kingsley Guard-a-Key Lock Box for its compact and lightweight design, making it easily transportable and suitable for use in multiple locations.
  • Both lock boxes feature a robust solid metal construction with a vinyl-covered shackle, undoubtedly enhancing their durability. However, I don’t think anything surpasses the Master Lock key lock box when it comes to long-term durability and longevity.
  • While both lock boxes claim to be weather-resistant, having had hands-on experience with both, I think Kingsley earns an extra point in this regard. 
  • Regarding their 4-digit combination code feature, users generally find it user-friendly in both models. However, I find the Master Lock to be slightly more seamless in operation and programming compared to the Kingsley Guard-a-Key Lock Box.

Master Lock 5400D vs. Kidde AccessPoint 001015 Key Lock Box

Master Lock 5400D vs. Kidde AccessPoint 001015 Key Lock Box

In my view, when we take a closer look at the Kidde AccessPoint 001015 and the Master Lock Key Lock Box, some factors come to light:

  • The Kidde AccessPoint 001015 stands out with its push-button combination, offering over 1,000 personalized combinations for keyless entry. However, it might require a bit of adjustment initially, which is a convenience feature that the Master Lock Key Lock Box lacks.
  • While Kidde lock box’s push-button combination lock offers a high level of security, it may require some initial adjustment. In contrast, the Master Lock key lock box’s 4-digit combination lock is user-friendly and relatively simple to operate and change.
  • Both Kidde and Master Lock key lock boxes have a similar key storage capacity, accommodating up to 4-5 keys.
  • The Kidde AccessPoint 001015 is designed for both indoor and outdoor use, making it versatile for various settings. I believe both these models will get equal points in this regard.
  • The Kidde AccessPoint 001015 enhances the user experience with its certified Frustration-Free Packaging, ensuring a smooth unboxing process. On the other hand, Master Lock gains an advantage with its limited lifetime warranty, providing added peace of mind.

In the near future, I will also be doing extensive reviews of Kingsley Guard-a-Key and Kidde AccessPoint 001015. I will also order a few wi-fi enabled key lock boxes like Igloohome lock box and Lockin.

Final Word

In my opinion, the Master Lock 5400D Key Lock Box offers a reasonable balance between security and convenience. Its durable construction, keyless entry, and versatility in mounting options make it a suitable choice for those in need of a basic key storage solution. However, its limited capacity and potential weather-related issues should be considered. 

While it may not be the most feature-rich option on the market, it provides solid value for its price, making it a viable choice for homeowners and property managers seeking a straightforward key lock box.

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Hey! I am Mark. Though I am not a locksmith by profession, but locks have always fascinated me since my teens. And it all started when I got locked out of my house and I had to pick the lock. Since then it has become my hobby to learn more about different kinds of locks, understand their working and methods to pick them up. In due course of time, I have also become better aware of how installing the right lock goes a long way in ensuring iron clad security. I aim to share my passion (about locks) through this blog. If you are also passionate about picking locks or are just looking to beef up the security, hop on the ride.