Large Digital Key Box - Master Lock 5412D

Quickfind Code : B1174

Push Button Key Safe - heavy duty and larger than most - ideal for outdoor use for emergency key, holiday rentals, carers.
The Master Lock 5412D Key Safe is 3 times heavier than similar models. Reprogrammable mechanical push button 4-6 digit pin code - no batteries required. Weatherproof and corrosion resistant with a hinged door that folds down when opened. Large enough to secure larger keys or credit card size swipe cards.

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Masterlock 5412D external key safe fitted with push button combination. This outdoor key safe has a 12 button personalised combination. Manufactured from solid zinc and with a thermoplastic cover which makes it very weather resistant. Ideal for the storage of keys, credit cards etc.

Features of the Master Lock 5412D Digital Large Spare Key Safe

  • Master Lock 5412D external push button key safe
  • Ideal for storage of keys, credit cards etc
  • Better resistance to hammering and sawing
  • 12 Button personalised combination - 4096 combinations
  • 0-9 + A & B Buttons
  • Usable internal depth is 23mm
  • Weather resistant - Thermoplastic cover
  • Discreetly fixes to the wall - fixings included
  • Solid heavy duty zinc body
  • Lifetime guarantee 

Uses for the Master Lock 5412D Digital Large Spare Key Safe

  • Store a spare key in case you lose your keys while out - saves breaking a window!
  • Used by children to gain access and avoids kids being locked if they mislay their key
  • Ideal for use by guests to gain remote access to holiday homes and lets
  • Care workers and District Nurses can gain access when visiting the elderly or infirm
  • Used by businesses to allow access to security keys in an emergency
  • Secure safety lockout keys to improve safety in factories and workshops

How to install the Master Lock 5412D Digital Large Spare Key Safe

  • Select a secluded wall where the key safe is obscured from the street by vegetation etc
  • The key safe has pre-drilled holes in the rear box
  • Open the door using the default code and place the key safe box in position
  • Using the holes in the rear face mark the drilling positions with an awl or chalk
  • Remove the key safe box and using an electric hammer drill with a masonry drill bit to make the holes
  • Use the fixings supplied to secure the key safe in position
  • These fixings can only be removed if one has access to your code
  • Follow the instructions supplied to change the 4 digit code to your preference
  • Replace the door and your key safe is now ready for use

Useful advice and information in the use and uses of Outdoor Key Safes


  • Key Storage Product Range: Master Lock Outdoor Key Safes
  • Manufacturer Part #: 5412
  • Manufacturer: Master Lock
  • Colour: Grey
  • Choice of Key Storage Lock: Mechanical Push Button Lock
  • Fixing Options: Rear fixing to a wall
  • Weight (kg):
    0st, 4lbs (approx)
  • Warranty Period: Lifetime
  • Standard Delivery Time: 1-2 business days
  • External Dimensions
    H 131 x W 95 x D 60 (mm) H 5.16 x W 3.74 x D 2.36 (inches)
  • Internal Dimensions
    H 102 x W 68 x D 23 (mm) H 4.02 x W 2.68 x D 0.91 (inches)

Customer Reviews

Customer Reviews

See the latest reviews from our customers

12.03.2018 | 12:10
Hopefully it will not get any use, it is for emergency use only.


Click here to ask us a question...

Can I just check if the internal dimensions of 102 x 68 x 53 is actual useable space or does the mechanism take any of that space?

The internal width and height are unrestricted, but the depth is, due to the depth of the locking mechanism, which is 30mm depth, leaving 23mm for the keys.

Question asked by Gillian Bouttell on 25 Jul 2016

What sort of fixings does this safe use. I don't have access to the other side of the panel this will be fixed to. How deep are the fixing screws/bolts? Thanks

The Master Lock 5412 Key Safe is supplied with screws and wall plugs for fitting to a solid wall. The Screws supplied are 4mm diameter x 30mm in length. If you need to attach via a cavity or wall covering you would just need to purchase 4 screws of the correct length. All key safes are supplied with either screws or expansion bolts to fit directly onto a solid wall so none would be much longer than those supplied by Master Lock.

Question asked by Gillian Bouttell on 14 Oct 2016

What are the letters A & B for? Can I set two different codes with them?

The A and B codes are used instead of numerals to to improve the security. You cannot use 2 codes - only one. You can view the operating instructions on the PDF attachment shown above.

Question asked by Javier on 14 Oct 2016

Does it have a rubber cover that protects the digits?

No - the Master Lock 5412 has no protective rubber cover to protect the keypad from the weather. This should not be an issue unless you are located within 10 miles of the sea, as salt air will attack the key pad. If you require a runbber cover 

Check out all the Keyguard models, the Supra C500, the Keysecure KSDIG1K and the Phoenix Ks2 - they all have covers over the keypad.

Question asked by Sam Bailey on 9 Dec 2016

Expert Guides



*However if the basket value is less than £50 there is a small order Handling Charge of £2.99 incl. VAT to cover administration only

*Does not include Highlands and Islands plus Northern Ireland  - Contact us for price

*All Steel Storage and Safes with weights exceeding 100kg will be liable for an extra charge if delivered north of the line between Glasgow and Edinburgh.

Delivery Times

Average Delivery times are listed against each individual product. Normally the delivery times (except where detailed) are :

Products weighing less than 30kg take 1-5 working days

Products weighing 31-100kg take 5-7 working days

Products weighing more than 100kg take 5-10 working days unless on a kerbside pallet delivery

Lockers and Steel Storage are delivered to your nearest kerbside entrance in 10-15 working days unless specified on the individual product.

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Returns & Refunds

This policy is offered in addition to your statutory rights.

You may return your purchase to Safe Options for a refund by obtaining a Customer Return Authorization (CRA) number within 14 days of the delivery date. To obtain a CRA please e-mail your invoice or order number and reason for return using the contact form. Alternatively you may contact our customer service department on 0117 929 2104.

Please note returns are subject to the following conditions:

1. You must have received a CRA number from our customer service department.
2. The product must be in "as new" condition, with original packaging and with all manuals and accessories.
3. You will receive a refund excluding the original delivery charge included in our price.
4. Special services such as Professional Installation are non-refundable.
5. Made to order items such as cut keys, keyed alike locks, Steel Cabinets and Lockers are non-refundable.
6. Products with bespoke modifications that are not available to order online are non-refundable.
8. Please allow up to 28 days for refunds to be processed and credited to your account.


If the product you purchase is faulty, we may offer a repair, exchange or refund as appropriate in accordance with your legal rights. Please email customer services or contact us on 0117 929 2104 if you feel your purchase is faulty.

£39.00 inc VAT

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FREE Delivery 1-2 business days

Extra service delivery times vary

0800 567 7549  0117 929 2104

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