Master Lock 4400EC Enterprise Indoor Bluetooth Padlock
The Master Lock 4400EC is an indoor Bluetooth smart padlock for fast, keyless access using the Master Lock Vault Home or Vault Enterprise app. Unlock it from your smartphone, share temporary or permanent access with trusted users, and review an audit trail of activity from the app. A directional keypad on the lock provides backup access without a phone.
Indoor-rated and compact, the 4400EC suits shared storage, personal lockers, office cabinets, storerooms and commercial back-of-house access points where accountable, keyless control is the goal. It is part of the wider Master Lock Vault Enterprise Bluetooth range, so it can be managed alongside the outdoor and Pro Series padlocks, the Bluetooth key safes and the door controller.
Estimated Warehouse Dispatch: 2 Days
Key Features
- Unlock over Bluetooth using the Master Lock Vault Home or Vault Enterprise app for keyless access
- Directional keypad backup allows entry without a phone
- Share access with family, staff or contractors - temporary or ongoing
- Audit trail monitoring provides visibility of user access history
- Low battery alerts appear on both the padlock and the app
- Battery jump allows unlocking even when the internal battery has no charge
- Compact indoor-rated body suited to lockers, storerooms, cabinets and personal storage
Access Methods
The 4400EC is opened over Bluetooth from the Master Lock Vault app, with a directional backup code on the lock itself. The table below shows what the padlock does and does not support.
| Method | Supported | Notes |
|---|---|---|
 Bluetooth (App) |
Yes | Open and manage from Vault Home or Vault Enterprise on your phone. How Bluetooth access works |
Backup Directional Code |
Yes | A directional code can be entered on the lock as backup access |
 Fingerprint |
Not Available | No biometric reader |
 RFID Card / Fob |
Not Available | No card or fob reader |
 Wi-Fi Remote Unlock |
Not Available | Bluetooth only - no gateway or Wi-Fi bridge |
 Mechanical Key Override |
Not Available | Keyless - no cylinder. If the battery dies while locked, the battery jump provides temporary access. Locks without key override |
Master Lock Vault
The 4400EC is managed through the Master Lock Vault apps, available on iOS and Android . Vault Home is the free personal app, supporting up to 10 locks with access history. Vault Enterprise is the business platform, with a web interface for managing many locks and many users, assigning access on a temporary or ongoing basis, and reviewing audit trails. The same padlock works with either.
For a broader view of how a Bluetooth platform fits a business, see our guide to choosing a platform for commercial use, and the Master Lock enterprise access range.
Battery & Power
The 4400EC runs on a single CR2 battery, supplied and easy to replace. The padlock and the app both provide a low battery notification and reminder. If the battery does go flat while the lock is closed, the battery jump feature lets you apply temporary power to open it - see what happens when a smart lock battery dies.
What's in the Box
- Master Lock 4400EC Indoor Bluetooth Padlock
- CR2 battery
- Quick start instructions
Suitable Uses
- Indoor lockers and personal storage
- Office cabinets and storerooms
- Retail back-of-house access
- Shared indoor access environments needing digital user management
Available Finish Options
Black
(This Product)
4400EC
Finish selection does not affect functionality, compliance, or performance.
Master Lock Vault Enterprise Range
The 4400EC is the indoor padlock in the Master Lock Vault Enterprise Bluetooth range. The same app also manages the outdoor and Pro Series padlocks, the Bluetooth key safes and a door controller - so gates, plant, cabinets, key storage and doors can be managed together.
| Item Code | Product | Range Position |
|---|---|---|
| 4400EC | Master Lock 4400EC Enterprise Indoor Bluetooth Padlock (This Product) | Padlock - indoor |
| 4401LHEC | Master Lock 4401LHEC Enterprise Outdoor Bluetooth Padlock | Padlock - outdoor, weather-covered |
| 6400ENT | Master Lock 6400ENT Pro Series Enterprise Bluetooth Padlock - Standard Shackle | Pro Series padlock - standard shackle |
| 6400LJENT | Master Lock 6400LJENT Pro Series Enterprise Bluetooth Padlock - Long Shackle | Pro Series padlock - long shackle |
| 6400SHENT | Master Lock 6400SHENT Pro Series Enterprise Bluetooth Padlock - Shrouded Shackle | Pro Series padlock - shrouded shackle |
| 5440EC | Master Lock 5440EC Enterprise Bluetooth Key Safe - Portable | Key safe - portable |
| 5441EC | Master Lock 5441EC Enterprise Bluetooth Key Safe - Wall Mount | Key safe - wall mount |
| 6440ENT | Master Lock 6440ENT Bluetooth Door Controller | Door controller - electric strike / magnetic lock |
The Master Lock Vault Enterprise Bluetooth key safes use the same app, so keys and access cards can be stored and shared under the same audit trail.
Full Specifications
| Item Code | 4400EC |
| Product Type | Indoor Bluetooth smart padlock |
| Full Height | 127 mm |
| Body (H x W x D) | 51 mm x 56 mm x 25 mm |
| Shackle Diameter | 7 mm |
| Shackle Clearance (H x W) | 48 mm x 22 mm |
| Body Material | Indoor-rated metal body |
| Colour / Finish | Black |
| Access Method | Bluetooth via Master Lock Vault app; directional backup code on lock |
| Battery | CR2 (supplied); battery jump for temporary access |
| Supported Platforms | Master Lock Vault Home and Vault Enterprise (iOS and Android); Enterprise web interface |
Frequently Asked Questions
No. It is opened over Bluetooth from the Master Lock Vault app on your phone - there is no separate Wi-Fi bridge or gateway. See how Bluetooth access works.
No. The 4400EC is keyless - there is no cylinder. Backup access is the directional code on the lock, plus the battery jump if the battery is flat. For why some smart locks skip a key cylinder, see locks without key override.
It is an indoor-rated padlock, so it is best kept to indoor lockers, cabinets and storerooms. For an outdoor application with a weather cover, look at the 4401LHEC outdoor padlock instead.
Both. It works with Vault Home for personal use (up to 10 locks, with access history) and Vault Enterprise for business use (many locks and users, with audit trails). Compare padlock types in our which smart padlock suits you guide.
Additional Information
The 4400EC is the indoor member of the Master Lock Vault Enterprise Bluetooth range, sharing an app and audit trail with the outdoor and Pro Series padlocks, the Bluetooth key safes and the door controller. Where an organisation is standardising keyless access indoors - lockers, cabinets, storerooms and back-of-house - managing them from one platform is the main advantage. We cover the full range in our enterprise padlock overview, and compare padlock technology types in the four technology types section.
Worth planning for: this is a keyless padlock with no mechanical override, so the directional backup code and the battery jump are your fallbacks - keep the code set and the battery fresh. This is a genuine consideration and is discussed in the no key override section of our roundup. To weigh the 4400EC against other options, the Smart Lock Buyer's Guide is a good starting point.
Warranty
Master Lock warranty against defects in materials and workmanship. Cover varies by product type:
- Many mechanical padlocks and security products: limited lifetime warranty
- Electronic, Bluetooth and smart lock products: fixed-term warranty (varies by model)
Master Lock 4400EC - What's in the Box
- Master Lock 4400EC Indoor Bluetooth Padlock
- CR2 battery
- Quick start instructions
Master Lock Bluetooth Enterprise - Product Brochure
Master Lock 4400EC - Downloads
Master Lock Bluetooth Catalogue
Master Lock Warranty
Master Lock is a global manufacturer of padlocks, security products and smart locks, distributed in Australia by Mayo Hardware. Warranty cover differs depending on the product type — the summary below explains the general position, and the exact term for any individual product is shown on that product’s own page.
Warranty Summary
Coverage by Product Type
Master Lock applies different warranty terms depending on the type of product:
- Many mechanical padlocks and security products carry a limited lifetime warranty against defects in materials and workmanship — if the product or a part fails due to such a defect during the life of the product, it is replaced free of charge.
- Electronic, Bluetooth and smart lock products (for example the Vault-connected range) generally carry a fixed-term warranty, the length of which varies by model.
Always check the individual product page for the warranty term that applies to that specific item.
How to Make a Claim
- Contact Terry’s Tradies Pty Ltd and its associated websites, trading names, and subsidiaries with your order details and a description of the fault.
- Have your proof of purchase ready — it is required for every claim.
- Where possible, include photos or a short description showing the defect so the claim can be assessed quickly.
- If the claim is accepted, the product or the faulty part is replaced free of charge.
Exclusions
The Master Lock warranty covers manufacturing defects only. It does not cover:
- Locksmith charges or labour costs — Master Lock does not reimburse fees paid to a locksmith.
- Damage caused by misuse, forced entry, accident, or unauthorised modification.
- Normal wear and tear, or cosmetic changes to the finish over time.
- Loss of keys or forgotten combinations (a separate replacement process may apply).
Important Notes
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and to compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. Any manufacturer warranty is in addition to, and does not limit, your rights under the Australian Consumer Law.
Further Information
It can be overwhelming with all the choices out there. We can help! We are experts with decades of experience in fitting locks of all types, not just Smart Locks. It is a free service we offer, and with just some photos and a few minutes of your time you can get expert advice and product recommendations tailored precisely to suit your needs.
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