Master Lock: Key Safes and Padlocks for a UK Household

Master Lock makes key safes and padlocks that help a UK household keep spare keys and outbuildings secure, in normal times and during an…

Master Lock is a padlock maker with a history going back to 1921, and it describes itself as the largest global manufacturer and marketer of padlocks1. For a UK household getting ready for emergencies, the part of its range that matters most is the key safe: a wall-mounted or portable box that holds a spare key so that a carer, a relative or a neighbour can get in when you cannot reach the door yourself. The maker's Select Access key safes are certified by Sold Secure and Secured by Design in the UK, and one model is described as specially designed for home care services2.

The other half of the range is padlocks for sheds, garages and storage, which matter when a storm or a power cut leaves an outbuilding unattended or when you are storing emergency supplies outside the house. This page sets out what each type does, how it is meant to be used, and what the maker says about delivery, returns and warranty, so that you can decide what fits your household plan and keep it working.

Buying Master Lock from the UK

The first thing a UK household needs to know is where the item ships from. The maker's product pages for the Select Access key safes list an estimated 7 to 10 business days for shipping, and state that expedited shipping is not available2. The returns process is run through a customer services line on 1-800-308-9244, which is a United States number, and returns must be prepaid and sent back within 30 days of authorisation, with a minimum 15% handling charge2. Custom made-to-order products cannot be returned2.

That does not tell you that every Master Lock product sold to a UK address ships from the United States, and it does not name a UK stockist. What it does tell you is that if you order from the maker's own shop, you should read the delivery and returns terms on the page before you pay, and check which country the item is dispatched from. If you need a key safe quickly, for example because a care package is starting next week, order early enough to allow for the shipping time the page states.

Ultion, a different maker, sells genuine Ultion keys and locks on a next-day service or through a local Ultion Centre5. That is a different maker's arrangement, not Master Lock's, but it shows what to look for if speed of delivery is the deciding factor for your household.

Who makes Master Lock: a padlock maker since 1921

Master Lock has been making padlocks since 1921 and describes itself as the largest global manufacturer and marketer of padlocks1. That scale matters to a household in a practical way: a maker with a long record and a wide range is more likely to have a model that fits a particular door, gate or cabinet, and more likely to still be around to honour a warranty years after you fit it.

The maker's key safe range runs from standard security to the highest level of protection, and from mechanical to Bluetooth solutions, so that there is one for every need6. For emergency planning, that spread is useful. A household that only needs a neighbour to reach a spare key during a flood warning can use a simple mechanical box. A household with a carer visiting on a schedule, or with several family members who need access at different times, may want the electronic options that the maker says improve control, allow sharing access and track who accesses the property and when6.

It is worth being clear about what a key safe is not. It is a way to give trusted people access to a key, not a substitute for a good door lock. Age UK's guidance on staying safe at home describes the front door lock a household should have as typically a 5-lever mortice deadlock with the Kitemark BS 36217. A key safe sits alongside that lock, holding the key that opens it.

Lock boxes and safes for keeping documents and keys secure

Master Lock's key safes are the core of its offer to UK households, and the maker says it has the largest range within the market and is the specialist of the key safe category6. The range covers wall-mounted boxes, a portable box with a shackle, and a Bluetooth model that is opened through an app. Each suits a different household circumstance.

ModelTypeHow it opensBest suited to
No. 5426EURD Select AccessWall-mounted key lock box14 large push buttons, resettable combination2Households with carers or regular visitors who need a key at the door
No. 5400EURD Select Access with shacklePortable key lock box with shackleSet-your-own 4-digit combination3Renters, or households that need the box to move with them
No. 5441EURD Bluetooth Select Access SmartWall-mounted Bluetooth key lock boxMaster Lock Vault Home app, iOS and Android4Households that want to share access temporarily and see who has been in
A wall-mounted key safe fitted beside a front door at waist height
A key safe should be fixed securely and, where the maker advises it, placed where it is not on open view3.

The No. 5426EURD is the one the maker describes as specially designed for home care services, CCTV companies and similar users2. It has an extra-large storage compartment that accepts most types of keys or access cards, a recessed door construction that offers more resistance to lever attacks, and a shutter door that gives better weather resistance and more discretion2. It is certified by CNPP in France, Sold Secure and Secured by Design in the UK2. For a household arranging care for an older or disabled relative, that combination of a large compartment and UK certification is the reason to choose it over a smaller box.

The No. 5400EURD is the portable option. It has a shackle rather than a fixed wall plate, so it can be hung on a door handle, a rail or a pipe and removed when you move3. It accepts multiple house keys, has a shutter door that protects the combination dials from weather, dirt and grime, and a moulded body and vinyl-coated shackle that prevent scratching3. The maker suggests installing it in a discrete location for added security3.

The No. 5441EURD is the Bluetooth model. It is a wall-mounted box with a large capacity for key cards or traditional keys, and it is opened through the free Master Lock Vault Home app, which is designed for personal use, supports up to 10 locks, and lets you share access with others on a temporary or permanent basis4. The maker's point is that there are no keys to lose and no combinations to forget, and no unauthorised key duplication4. For a household that needs to let a plumber or a carer in on a particular day, that is the feature that decides it.

Key safes for carers and people who need help at home

A key safe earns its place in an emergency plan when someone else may need to reach you or a dependent relative. The No. 5426EURD is built for exactly that: the maker describes it as designed for home care services, and it has 14 large and easy to use push buttons with a resettable combination2. The extra-large compartment takes most keys and access cards, so a carer can carry a key for the front door and a second for a side gate or a medicine cabinet2.

The practical points for a household setting one up:

  • Fix it properly. The No. 5426EURD is a wall-mount design for permanent installation, and the mounting hardware is included2. Fit it at a height and in a place that suits the people who will use it, not where it is easiest to reach from the pavement.
  • Choose a code you can change. The combination is set by you and can be reset, so you can change it when a carer leaves or a tenancy ends2.
  • Keep the code out of the box. Record the combination somewhere secure inside the house, not on a note beside the safe.
  • Tell the people who need it, and no one else. The maker's electronic options let you track who accesses the property and when, which is useful if several people hold the code6.

For a household supporting an older relative, the Extra Help in an Emergency guide sets out the wider arrangements, including the Priority Services Register, that sit alongside a key safe. A key safe gets someone through the door; it does not replace a plan for who checks on whom.

Padlocks for sheds, garages and storage

Padlocks are the other half of what Master Lock makes, and for a household preparing for storms, floods or long power cuts they protect the outbuilding where the generator, the fuel, the tools and the stored water live. The police advise fitting a closed shackle padlock to a shed door, with the fittings bolted through the door and any screws concealed8. That is the standard to hold a padlock to, whatever the maker.

A closed shackle padlock on a shed door with concealed screws
A closed shackle padlock with concealed fixings is the police recommendation for a shed door8.

The wider market shows what to look for. ABUS describes its steel padlocks as suitable for protecting larger valuables and objects against theft and vandalism9. The igloohome Padlock has a hardened steel shackle10. Yale's laminated steel padlock is described as suitable for a garden shed, gate or any other outdoor high value items you want to keep safe and secure11. These are other makers' descriptions of their own products, given here only to show the features that matter: a hardened shackle, a closed shackle design where the door allows it, and a body that resists cutting and levering.

For the door itself, the lock is only part of the job. Avon and Somerset Police advise that if a cylinder lock on an older patio, sliding or bi-fold door protrudes beyond the frame handle, you should get a member of the Master Locksmiths Association to change it to a shorter, more snap-resistant one12. The same principle applies to a shed or garage: the padlock, the hasp and the door all have to be sound for the lock to do its work.

Support and warranty for UK owners

The warranty depends on the model. The No. 5426EURD and the No. 5400EURD each carry a 30 Year Warranty, which the maker describes as providing peace of mind from a brand you can trust2. The No. 5441EURD carries a Limited 2 Year Warranty4. Check the model you are buying against the warranty stated on its own page, because the difference between 30 years and 2 years is large and it follows the product, not the brand.

For the Bluetooth model, support also means the app. The Master Lock Vault Home app is free, runs on iOS and Android, is designed for personal use and supports up to 10 locks4. If you rely on the app to open a key safe for a carer, make sure the phone that runs it is charged and that the app is set up before you need it, and keep a mechanical backup route to the key in case a phone is lost or a battery is flat.

Lost combinations and forgotten codes

A lost combination is the failure that takes a key safe out of service, and the answer depends on the type. The mechanical Select Access boxes use a set-your-own combination, so the code is one you chose, and it can be reset while the box is open2. If you cannot open it, the maker's customer services line is the route to take, on 1-800-308-92442.

The No. 5441EURD removes the problem in a different way: the maker's point is that there are no keys to lose and no combinations to forget, because access is by key rather than by code4. That is only true while the key is held by someone you trust, so treat the spare key as part of the kit and keep track of who has it.

Other makers handle code retrieval in ways worth knowing about when you compare. Codelocks says that on its KitLock KL10, if the code has been forgotten it can be retrieved using the master key provided, and the lock offers up to 10,000 unique combinations13. Its KL1100 KeyPad Locker Lock uses an 8-digit master and sub-master code14. Those are different products from different makers, but they show the question to ask before you buy: if the code is lost, what is the recovery route, and who holds the master key?

Fireproof safes: what a key safe is not

A key safe keeps keys secure. It is not a fireproof document safe, and the Master Lock products described here are not sold as one. If your emergency plan includes protecting passports, insurance papers or a will from fire, you need a safe the maker explicitly describes as fireproof, and you need to check its rating.

The market shows what those ratings look like. Chubbsafes publishes a datasheet for its Fire File 25 with a UL 72 Class 350 1h rating, and the electronic lock on that model uses 1 master code and 1 user code15. Burton Safes lists fire and security safes as a category in its home range16. Those are other makers' products, given to show the kind of specification to look for: a stated fire rating, a stated test standard, and a lock with a known code structure.

For most households, the sensible split is a key safe at the door for access and a separate fire-rated container indoors for papers. Do not put documents in a key safe and expect them to survive a fire.

Where Master Lock fits a household plan

Master Lock's contribution to a UK household's emergency preparations is narrow and useful: a key safe that lets trusted people reach a key when you cannot answer the door, and padlocks that keep the outbuilding where your emergency kit lives secure. The key safes carry UK certification, the mechanical models carry a 30 Year Warranty, and the maker's range covers wall-mounted, portable and Bluetooth options so that a household can match the box to how it actually lives6.

The limits are just as important. The maker's own shop lists shipping times of 7 to 10 business days and a returns process run from a United States number, so order early and read the terms2. A key safe is not a fireproof safe. And a padlock is only as good as the door it is fitted to, which is why the police advice on closed shackles and concealed fixings matters as much as the lock itself8.

For the wider picture, the Home Security guide covers doors, windows and outbuildings, and the Getting Started guide sets out how a household plan fits together. A key safe and a good padlock are small parts of that plan, but they are the parts that decide whether help can get in, and whether your stored kit is still there when you need it.

Sources (16)
  1. Global Sources for Keysafes, Master Lock Company LLC
  2. No. 5426EURD Select Access Key Lock Box, Master Lock, 2026
  3. No. 5400EURD Select Access Key Lock Box with shackle, Master Lock, 2026
  4. No. 5441EURD Bluetooth Select Access Smart, Master Lock, 2026
  5. Ultion Padlock, Ultion, 2024
  6. Key safes range, Master Lock, 2026
  7. Staying safe, Age UK, 2025
  8. Garden security, Police Service of Northern Ireland, 2026
  9. Steel padlocks, ABUS, 2026
  10. igloohome Padlock, igloohome, 2026
  11. Yale laminated steel padlock 40mm (pack of 3) | ASSA ABLOY, ASSA ABLOY
  12. Door security, Avon and Somerset Police, 2026
  13. KitLock KL10, Codelocks, 2026
  14. KL1100 KeyPad Locker Lock, Codelocks, 2026
  15. Fire File 25 datasheet, Chubbsafes, 2024
  16. Fire and security safes, Burton Safes, 2026

Common questions

Can I get Master Lock products delivered outside the United States?

The Master Lock product pages for the Select Access key safes list an estimated 7 to 10 business days for shipping, with expedited shipping not available, and the returns process is run from a United States customer services line. If you are buying from the UK, check the delivery terms on the page you order from before you pay, and confirm which country the item ships from.

Where can I buy Master Lock products in the UK?

Master Lock describes itself as the specialist of the key safe category, with the largest range within the market, and its key safes carry Sold Secure and Secured by Design certification for the UK. The maker's own pages are the reliable place to check a model's certifications and specifications before you buy from any stockist.

When was Master Lock founded?

Master Lock is a padlock maker with a history going back to 1921, and describes itself as the largest global manufacturer and marketer of padlocks. That long record is the reason its key safes and padlocks are widely recognised by UK households and by the care services that use key safes to reach people at home.

Is a Master Lock key safe suitable for carers and home care visits?

Yes. The Master Lock No. 5426EURD Select Access Key Lock Box is described by the maker as specially designed for home care services, CCTV companies and similar users. It has 14 large push buttons for a resettable combination, an extra-large compartment that accepts most keys or access cards, and it is certified by Sold Secure and Secured by Design in the UK.

Are Master Lock safes fireproof?

The Master Lock products covered here are key lock boxes and padlocks, not fireproof document safes. If protecting papers from fire is your aim, look for a safe the maker explicitly describes as fireproof, and check its fire rating. A key safe keeps keys secure; it is not designed to protect documents from heat.

What happens if I forget the combination on a Master Lock key safe?

The mechanical Select Access key safes use a set-your-own combination, so the code is one you chose and can reset while the box is open. The Bluetooth model, the No. 5441EURD, is opened through the Master Lock Vault Home app, which the maker says means no keys to lose and no combinations to forget. Keep a record of any code somewhere secure away from the box.