Master Lock Safes for Home and Business
Master Lock Security Safes and Operating Guide
Master Lock security safes provide protected storage for cash, jewellery, passports, documents, keys and other personal or business valuables. The range includes compact safes for home use and larger models suitable for offices and workplaces.
Available models include key-lock and electronic-lock safes in a choice of sizes. Selected models have carpeted interiors, adjustable shelves and fixing points for secure bolt-down installation.
Before ordering, compare the safe's internal dimensions, external dimensions, capacity, weight and locking method with your requirements. No fire-resistance, cash, valuables or insurance rating should be assumed unless it is stated in the individual model specification.
Master Lock Safe Features
- Key-lock and electronic-lock models available
- Choice of capacities for home and workplace storage
- Suitable for cash, jewellery, documents and personal valuables
- Carpeted interior on applicable models
- Adjustable shelves on selected larger safes
- Designed for secure bolt-down installation
- Individual model specifications available before ordering
For help selecting a Master Lock safe, call 01284 749211 or email sales@totallocker.co.uk .
Master Lock Safe Operating Instructions
The following operating information is intended to assist with setting up, programming and maintaining compatible Master Lock security safes. The linked manual covers the X031, X055, X075 and X125 models, but features and locking methods vary. Follow only the instructions that apply to your particular safe.
Keep the operating manual, override-key number and user code in a secure place away from the safe. Never store an override key or written access code inside the safe.
Before Using the Safe
| Step | Action |
|---|---|
| 1 | Identify the safe model and applicable locking method |
| 2 | Locate the override keys and record the key number securely |
| 3 | Install fresh batteries where the safe has an electronic lock |
| 4 | Replace the factory code with a private user code |
| 5 | Test the new code and override key while the door remains open |
| 6 | Securely install the safe in accordance with its instructions |
Factory Code for Compatible Electronic Safes
Compatible Master Lock electronic safes are supplied with the factory default code:
1-7-5-0-0-#
This code is intended only for initial setup. Change it before storing valuables and test the replacement code several times while the safe door is open.
Compatible keypad locks accept a user code containing between two and eight digits. A longer, non-obvious code is generally harder to guess. Avoid birthdays, repeated numbers, simple sequences and other information that could be associated with the user.
Opening the Safe with the Override Key
Compatible electronic safes can be opened with the supplied override key where the keypad cannot be used. Keep this key in a secure location away from the safe.
Override Key Procedure
- Remove the override-lock cover located between the operating knob and keypad.
- Insert the supplied override key and turn it anticlockwise.
- Turn the operating knob clockwise to open the safe door.
- Turn the key clockwise before removing it.
- Replace the override-lock cover.
Test the override key after programming the safe. Record the key number shown on the key and retain it separately, as this information may be required when requesting a replacement.
Installing or Replacing the Batteries
Compatible electronic models use four AA alkaline batteries. Replace the batteries as a complete set at least every two years, or sooner when the safe displays a low-battery warning or the keypad becomes slow to respond.
Battery Installation Procedure
- Open the safe door.
- Slide the battery-compartment cover on the inside of the door in the direction shown by the arrow.
- Remove all existing batteries.
- Install four new AA alkaline batteries, observing the marked positive and negative polarity.
- Slide the battery-compartment cover securely back into position.
- Test the keypad while the safe door remains open.
Battery precautions: Do not mix old and new batteries, different battery brands or different battery types. Do not use rechargeable or non-alkaline batteries unless the instructions for the specific model expressly permit them.
Used batteries should be taken to an appropriate battery-recycling point. Do not place damaged, leaking or corroded batteries into another device.
Programming a New User Code
Programme a new private code before placing valuables inside the safe. The following procedure applies to compatible Master Lock electronic models.
User Code Programming Procedure
- Open the safe door and leave it open throughout the procedure.
- Remove the internal battery-compartment cover.
- Locate and press the programming button inside the battery compartment. The yellow indicator will illuminate.
- Enter a new user code containing between two and eight digits.
- Press the # key. The yellow indicator should turn off, confirming that the code has been stored.
- Replace the battery-compartment cover.
- Test the new code several times while the door remains open.
Never close and lock the safe until the new code and override key have both been successfully tested.
Master Lock Safe Troubleshooting
| Problem | Recommended Check |
|---|---|
| Keypad does not respond | Install four fresh AA alkaline batteries and check their polarity |
| User code is not accepted | Use the override key, then programme and test a new code with the door open |
| Override key is missing | Locate the recorded key number and contact Total Locker Service |
| Battery compartment shows corrosion | Stop using the lock and obtain professional inspection or repair |
| Safe cannot be opened | Do not force the door or keypad; contact the supplier with the model and key details |
Installation and Insurance Considerations
A security safe should be fixed to a suitable supporting surface using the manufacturer's recommended installation points and fixings. Check for hidden pipes, cables and underfloor services before drilling.
Where the safe is being purchased to meet an insurance requirement, confirm the required cash rating, valuables rating, certification and installation method directly with the insurer before ordering. A general security safe should not be assumed to provide certified fire or burglary protection.
Security Safe Manual
Download the manufacturer's instructions for further information about operating, programming and installing the applicable models.
Master Lock X031, X055, X075 and X125 Security Safe Manual
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from £686 Plus V.A.T.

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from £233 Plus V.A.T.

Mini Vault Deposit
from £282 Plus V.A.T.

DH Series Deposit Safes
from £468 Plus V.A.T.

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Master Lock Security Safe Specification
Master Lock security safes provide practical storage for cash, jewellery, passports, keys, documents and other personal or workplace valuables. The range includes seven models, with internal capacities from approximately 10 litres to 170 litres.
The smallest safe uses a conventional key lock, while the remaining models use electronic keypad locks. Every safe has a carpeted interior, and larger models include adjustable shelves to help organise documents, boxes and other stored items.
Master Lock Safe Features
- Seven security-safe models available
- Internal capacities from approximately 10 to 170 litres
- Key locking on the smallest model
- Electronic keypad locking on the remaining models
- Carpeted interior throughout the range
- Adjustable shelves on larger models
- Designed for secure bolt-down installation
- Fixing bolts supplied as standard
- Suitable for home, office and workplace valuables
Range Specification
| Specification | Details |
|---|---|
| Product type | Security safe for personal and business valuables |
| Manufacturer | Master Lock |
| Number of models | Seven |
| Capacity range | Approximately 10 to 170 litres |
| Locking options | Key lock or electronic keypad, depending on model |
| Interior | Carpeted to help protect stored items |
| Shelving | Adjustable shelves on larger models |
| Installation | Designed to be securely bolted down |
| Fixings | Fixing bolts supplied as standard |
Available Master Lock Safe Models
| Model | Range Description | Lock Type |
|---|---|---|
| X031 | Small security safe | Key lock |
| X055 | Medium security safe | Electronic keypad |
| X075 | Large security safe | Electronic keypad |
| X125 | Large security safe | Electronic keypad |
| T6-331 | Large security safe | Electronic keypad |
| T8-331 | Extra-large security safe | Electronic keypad |
| T0-331 | Extra-extra-large security safe | Electronic keypad |
Refer to the individual model specification before ordering to confirm its exact external dimensions, internal dimensions, capacity, weight, shelf arrangement and locking functions.
Key Lock and Electronic Lock Models
| Lock Type | Advantages | Considerations |
|---|---|---|
| Key lock | No batteries or access code required | The operating keys must be stored securely away from the safe |
| Electronic keypad | Provides coded access without using a key during normal operation | Batteries and the user code must be maintained, and the override key must be stored separately |
Compatible electronic models accept a programmable user code and include an override-key facility. Check the relevant model instructions before changing the code or replacing the batteries.
Carpeted Interior and Adjustable Shelves
Each Master Lock safe has a carpeted interior designed to help reduce scratching and marking of jewellery, watches, electronic devices and other stored valuables.
Larger models include adjustable shelves, allowing the internal space to be arranged for documents, folders, boxes and items of different heights. Shelf quantities and positions vary by model.
Bolt-Down Installation
Master Lock safes are designed to be securely bolted down, and fixing bolts are supplied as standard. Secure installation helps reduce the risk of the complete safe being removed.
Check that the proposed floor or wall is capable of supporting the safe and its contents. The fixing position should also be checked for hidden pipes, cables and other services before drilling.
| Installation Requirement | Check Before Installation |
|---|---|
| Supporting surface | Confirm that it is suitable for the safe and expected load |
| Fixing position | Check for hidden pipes, cables and underfloor services |
| Door clearance | Allow sufficient space for the safe door to open fully |
| Delivery access | Measure doorways, corridors, steps and lifts |
| Installation instructions | Follow the guidance supplied for the selected model |
Suitable Contents
- Cash and personal valuables
- Jewellery and watches
- Passports and identity documents
- Keys and access credentials
- Contracts and confidential records
- Small electronic devices
- Backup drives and workplace media
Security, Fire and Insurance Ratings
These products should not be described as fireproof, waterproof, biometric or insurance-rated unless that feature is explicitly confirmed for the individual model.
No certified cash rating, valuables rating, fire-resistance classification or burglary-resistance grade is confirmed by the available range information. Where a safe is required for insurance purposes, confirm the required rating and installation method with the insurer before ordering.
For products specifically designed and tested for fire protection, view the fireproof safe range .
Choosing the Correct Master Lock Safe
| Requirement | Check Before Ordering |
|---|---|
| Required capacity | Allow space for present and future valuables |
| Largest stored item | Compare it with the internal dimensions and door opening |
| Access method | Choose between key locking and electronic keypad access |
| Internal organisation | Confirm whether adjustable shelves are required |
| Installation location | Check the supporting surface and available door clearance |
| Safe weight | Assess delivery, handling and positioning requirements |
| Insurance requirement | Confirm any required rating directly with the insurer |
Operating Instructions
The Master Lock security-safe manual contains operating, battery, programming and override-key information for the X031, X055, X075 and X125 models.
Master Lock X031, X055, X075 and X125 Security Safe Manual
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Master Lock Security Safe FAQs
What can be stored in a Master Lock security safe?
Master Lock security safes can store cash, jewellery, passports, documents, keys, small electronic devices and other personal or workplace valuables. Compare the items with the selected safe's internal dimensions before ordering.
How many Master Lock safe models are available?
The range contains seven models: X031, X055, X075, X125, T6-331, T8-331 and T0-331. Capacities range from approximately 10 to 170 litres.
Are Master Lock safes key locked or electronically locked?
The smallest model uses a conventional key lock. The remaining Master Lock safe models use electronic keypad locking.
Do electronic Master Lock safes have an override key?
Compatible electronic models include an override-key facility. Keep the override key and its key number in a secure location away from the safe. Check the individual model manual for the correct operating procedure.
Do Master Lock safes have adjustable shelves?
Larger models include adjustable shelves. The number of shelves and available adjustment positions depend on the selected model.
Do Master Lock safes have a carpeted interior?
Yes. The safes have a carpeted interior designed to help reduce scratching or marking of stored valuables.
Should a Master Lock safe be bolted down?
Yes. Master Lock security safes are designed for secure bolt-down installation, and fixing bolts are supplied as standard. The supporting surface must be suitable for the safe and expected load.
Can Master Lock safes be fixed to a wall or floor?
The correct fixing position depends on the selected model and its manufacturer instructions. Check the safe's fixing points and the supporting structure before installation.
Are these Master Lock safes fireproof?
No certified fire-resistance rating is confirmed for this security-safe range. Do not assume that a model is fireproof unless its individual specification provides a recognised fire classification. View the fireproof safe range where certified fire protection is required.
Are Master Lock security safes waterproof?
No waterproof or water-resistance rating is confirmed by the available range information. Check the individual model specification before using a safe in an area exposed to moisture or flooding.
Do Master Lock safes have a cash or insurance rating?
No certified cash, valuables or burglary-resistance rating is confirmed by the available range information. Ask the insurer to confirm its safe and installation requirements before purchasing for insurance-dependent storage.
How do I reset the code on a Master Lock electronic safe?
Open the safe door, locate the programming button inside the battery compartment and follow the model instructions to enter and confirm a new code. Test the code several times while the door remains open. Download the Master Lock safe manual for compatible models.
What batteries do Master Lock electronic safes use?
Compatible electronic models use four AA alkaline batteries. Do not mix old and new batteries or different battery types, and test the keypad while the safe door remains open after replacement.
How do I choose the correct Master Lock safe size?
Compare the safe's internal dimensions with the largest item being stored and allow additional space for future requirements. Also check its external dimensions, weight, locking method, shelves, delivery access and installation position.
Where can other safe types be viewed?
View the complete safe range or browse fireproof safes where tested fire protection is required.