5 Best Key Safe Lock Boxes

Author: Reece Thompson | Updated on July 3, 2021

You should only buy a Police approved lockbox; that's our position. Be wary of cheap key safes - they're either imitations or Chinese knock-offs and easy to break.

If you're looking for a quick answer, The Supra C500  keysafe is, without a doubt, the top rated one to buy. Just go ahead and buy it! It has so many convincing reviews - pretty much all positive and has lots of repeat buyers.

As it is only one of three that has been approved by the Police, you shouldn't need to ask any further questions! But before we dive deep, let's give you our winner, the runner-up and a budget option.

Our winner is a bit pricier than other models, so we can understand why you might look at other options. The question you should be asking is: why risk my family's valuables, safety and well-being to save a few pennies?

Beyond our top pick, you're on this page as you want to know which brand has the best wall mounted safe? i.e. which push-button key lockbox is a good option (other than the winning products)?

First things first: The price has been dropping for a while, so it's a win for the homeowner.

However, there's been an explosion of brands that make them, so how do you pick the best one?

Go for the ones that only have Police Preferred accreditation. That is our simple message.

There are only three that have this accreditation. We have thoroughly tested two of these:

The third one is the Master Lock Police Certified 5426EURD, but we must be open and tell you that we haven't tested this one yet.

“​The Supra C500 is said to be as secure as your front door.”

We have used the above items at some point in the last two years, meaning we no longer need to hide the front door spare key behind the bin or underneath a rock*.

A well-positioned and secure store for door keys offers peace of mind to different types of users.

Now you know which one we think is our winner, it's time for you to make up your mind.

With so many Chinese copycat items, we think you must avoid the cheap imitations and go for the real thing. With that in mind, we ask that you read the reviews the of the items listed below as we give our favourite 5.

* If you still want to hide it under a rock, you can buy a rock shaped lock box which should deter the most ardent of burglars.

1. Supra C500

supra c500

Check Price at Amazon

This is a POLICE APPROVED push button key safe

  • Manufacturer: Supra
  • Weight: 1.9 Kg
  • Internal dimensions: 7.9 x 7.9 x 6.3 cm

The Supra C500 is the most secure one - no doubt about it!

It comes with a weatherproof cover made of plasticised rubber, helping to stop any rain or snow from weathering the item. As a bonus, it also acts to disguise the thing from unwitting passers-by.

As tough as it is durable, the item is made of a heavy grade stainless steel and zinc-alloy and comes as a double-wall construction.

If you’re interested, we have a more rounded and in-depth review of the Supra C500.

It is the only mechanical version that is endorsed as ‘Secured by Design’ by the UK Police and is one of the few insurance approved brands, i.e. it has received accreditation by the LPCB.

They do have a comprehensive guide on door reinforcement which is worth a read.

As a caveat, in North America, the Kidde Accesspoint is pretty much the same version.


  • The only mechanical police approved key safe.
  • Stores up to 6 keys.
  • 2 year guarantee.


  • Very expensive.
  • Instructions can confuse some people.

2. MasterLock - 5401D


Check Price at Amazon

  • Manufacturer: MasterLock
  • Weight: 0.39 Kg
  • Internal dimensions: 22.8 x 16.6 x 4.8 cm

A long-time favourite, this keysafe is designed to have up to 10,000 sequences via the combination dial.

It comes with four pre-drilled holes to the rear, allowing you to mark off the holes before drilling into brick, stone or masonry.

You can fit this item with standard DIY tools, i.e. an 8mm drill will suffice.

If the keys you’re going to store are for cylinder locks, then this will be good enough. However, with mortice lock keys, it is a bit fidgety.

The issue is that the top half of the design houses the locking mechanism. This eats up a fair bit of space, meaning the area is little tight, especially if your mortice key is bulky.

In this instance, we would recommend that you upgrade to the bigger Masterlock 5403EURD keysafe.

As for longevity and security, the shutter door protects the dials from weather, dirt and grime. The well-constructed zinc casing will frustrate vandals that might be tempted to use a hammer or saw(!)

The Master Lock 5400D is the slight variant to this i.e. it's the one you can attach to a door knob or a hook.


  • Indoor and outdoor use.
  • Durable design and scratch proof mould.
  • 10,000 resettable combinations.


  • Can be a bit small for fobs or mortice lock keys.
  • The silver/grey colour does attract attention.

3. Burton XL Wall Mounted

burton lockbox

Check Price at Amazon

  • Manufacturer: Burton Safes
  • Weight: 2 kg
  • Internal dimensions: 9.5 x 5.6 x 16 cm

Our favourite thing about this product is the sheer weight: 2 kilograms! That’s a strong and robust product, even before handling it.

We also like the outer protective cover. It acts as a weather barrier to stop any snow or rain from getting inside, but it also does an outstanding job of camouflaging.

We’re not a fan of having your wall-mounted item being easy to spot, so once the plasticised rubber cover is on, it seamlessly sits alongside other wall-mounted bits and pieces such as a broadband box.

Other than that, it is well-built, has a modern feel about it and the size is pretty big inside – enough to hold cash, small items and credit cards. Did we mention that it has received Police accreditation?


  • Key hook inside allows easy hanging of keys.
  • Stores up to 10 keys and credit cards.
  • Comes with a protective waterproof cover.


  • A bit on the expensive side.
  • Digits can be hard to see during night-time.
  • Struggles to fit into tight spaces.

4. Sentinel Wall Mounted

sentinel wall mounted lock box

Check Price at Amazon

  • Manufacturer: Sentinel
  • Weight: 0.80 Kg
  • Internal dimensions: 26.6 x 15.6 x 7 cm

It can hold and store multiple keys. Like the Supra model described above, this is also a punch button keypad style.

The purchase comes with four screws and mounting hardware. You'll need an 8mm bit to screw into the masonry at your property.

The code can be any length and can be in any order, but any single number can only be used ONCE. It is a bit more complicated to use compared to other combination keysafes, but some might consider a keypad style one more comfortable to use.

It is relatively spacious inside, and it feels like a well-designed product. It comes with a waterproof cover which also helps to give it a discreet look.


  • Push button digits.
  • Stores up to 10 keys.
  • Weather resistant with special paint.


  • Somewhat expensive.
  • Not as secure as some other locks.
  • Buttons can get stuck in frosty conditions.

5. Rhino XL Combination

rhino lockbox

Check Price at Amazon

  • Manufacturer: Rhino
  • Weight: 0.8 Kg
  • Internal dimensions: 14.5 x 10.5 x 5.5 cm

This outdoor key safe by Rhino is a bigger size, meaning lots of space if you need to put more than a few keys in there.

It is also a UK branded item, which is something we look out for.

Many Chinese knock-off sellers list these types of products on Amazon and eBay, so with something as important as home security, we would always opt for a UK, USA or European based company that carries out more rigorous checks.

With the sizing of it, the case will hold car keys and key fobs in addition to the regular items such as cash and access cards. It’s not quite big enough to leave your kids lunch in there, but the size is ample enough!


  • Largest one we have bought - lots of space!
  • UK branded item - feels more trusted
  • Rugged and attractive design


  • Some buyers say the digits can be a bit stiff.
  • The screws that come with it are not great.
  • On the edge of being a bit overpriced.

Where Can They Be Fitted?

Typically, you use them in a holiday let home and apartments to give access to out of town visitors and holidaymakers to gain access.

However, the usage of these security devices have increased (as described above), and some other places include:

  • Holiday homes and Bed and Breakfast stay
  • AirBnB accommodation for short term stays
  • Traditional offices and Co-working places
  • Regular homes and apartments
  • Access to garages and warehouses
  • Dockyards and shipping ports
  • Car rental locations and hot spots

Ease of access is essential. However, it would be best if you balanced it with being placed in a discreet location that doesn't attract attention.

Perhaps choosing a colour that blends into the background of the surface it's attached to will help, i.e. so it doesn't stand out against the brick.

Bear in mind that if you don't install the item according to the manufacturer's instructions, then it could invalidate any future house insurance claims.

Please read the installation guide properly before affixing it to a surface.

Features That Will Help Your Buying Decision

Button Efficacy

If it's a push button style, then you may have to take into consideration the size, the number and the 'weight' of the push buttons. These are all considerations when purchasing a key safe.

What we're trying to get at is: how accessible is the front plate? If the item is going to be used by an elderly person that doesn't quite have the dexterity of someone much younger, the above factors need to be taken seriously.

Similarly, questions on the efficacy of the buttons apply if it's a dial key type that we've discussed on this page. If the dial is too rigid or not big enough, then a senior member of your family might struggle again.


Especially in poorly lit conditions, how visible is the front plate and buttons to someone that might require better accessibility. In this situation, we'd almost always go for the Master Lock 5425E Light Up version as you can see the digits much more clearly.

Hold Capacity

You need to be sure that it can hold the amount of keys you need it to.

Make sure you know what size to get and confirming how much it holds. A regular sized key safe can hold between 4 and 8 keys depending on the model and its size.

A good rule of thumb is to buy one that can hold the number of keys it needs to, about 2 times over. If you think your key safe will be under a lot of pressure and might need to store more keys, then consider buying one that’s bigger than you need at first.

The other point to consider is making sure that your key safe will fit in the desired place and not take up too much space.

Furthermore, if you need it to hold other things such as credit cards, then double check the width and height internally to be sure it'll fit in.

What About an Electronic Bluetooth Version - Pros and Cons

These days, you can get advanced smart lock devices. While electronic lock boxes are a modern upgrade, you should be cautious before you invest in one of these.

The best thing about this type of device is that you can specify who gains access, i.e. you receive a log of the times the device was accessed and by whom. That is super secure in our eyes and gives you much more control.

Everyone these days has a smartphone, and it just takes an app on the phone to gain access.

However, the most significant disadvantage is when the signal fails, or the connectivity is unreliable. If you need to grant access to your cleaner at a set time and the signal is weak, or the Bluetooth connectivity is not stable, then this is an unnecessary headache!

Further to the above, the cost is at least 2.5x what it costs compared to a traditional one, so you need to understand this before parting with your cash.

With all that being said, the best digital lockbox is the Bluetooth Master Lock 5441 EURD in our opinion.

We hope you enjoyed this round-up of key safes. To see other reviews in the security section, please click here.

Supra c500 reviewed
Supra C500