Master Lock 4401LHENT

Bluetooth Outdoor Padlock

Reviews (4) | Customer Questions (3)


For Business & Facility Applications

No more lost keys or combinations. Remotely control, manage access and monitor usage for unlimited Bluetooth series padlocks with the powerful Master Lock Vault Enterprise smartphone app and site. This durable cut and saw resistant directional outdoor padlock is ideal for facilities looking to improve security and accountability with robust audit trail features.

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Upgraded 4401DLH Bluetooth padlock with enhanced administrative features for businesses, including detailed audit trails, individual and group access management, and location tracking through the new Master Lock Vault Enterprise software

  • Bluetooth enabled outdoor padlock
  • Hardened boron alloy shackle for superior cut resistance
  • Includes Master Lock Vault Enterprise iOS and Android app, and web interface, designed for business applications working with many locks and many users
  • Use your smartphone to open and manage your lock with the Master Lock Vault Enterprise app
  • No keys to lose, no combinations to forget, no unauthorized key duplication
  • Backup access using directional code on lock keypad
  • Share access with others – temporary or permanent
  • Easily monitor access with robust data and audit trails
  • Low battery notification and reminder on padlock and in app
  • Comes with easy to replace CR2450 battery
  • Battery jump allows for temporary access if battery dies while locked

Master Lock Vault Enterprise

  • Efficiently manage access to ensure the right users have the right access
  • Simplify security set-up with bulk user and lock uploads
  • Automatically map lock and lock box locations via smartphone
  • Easily monitor access with robust data and audit trails
  • Assured back-up entry method using manual, directional or numeric code
  • Leverage the security of 256-bit, military-grade encryption

Facilities Management

  • Secure areas, materials, equipment and lockers
  • Easily assign access to groups or individuals by time and date
  • Efficiently manage many locks and many users
  • Increase accountability with audit trail of who accessed devices and when

Best Used For

  • Construction sites and equipment
  • Industrial, storefront and business gates
  • Tool chests and boxes
  • Utility meters, substations and cable boxes

Master Locks’s durable cut and saw resistant 4400D Bluetooth padlocks just got an upgrade with the Master Lock Vault Enterprise system. Built with businesses and facilities in mind, Master Lock Vault Enterprise provides a flexible and user-friendly system for keyless lock and lock box management through it’s web interface and smartphone app. Your smartphone becomes a smart key, eliminating the need for physical keys as well as the time and money spent rekeying, replacing and duplicating keys.

Administrators can create scheduled or permanent access for individuals and customizable groups. Always know where your locks are through automatic mapping and know when they’re being access through detailed audit trails. Backup directional code keypad can be used if a user does not have access to a device with Enterprise software.

GoKeyless™ is a factory trained and authorized Master Lock® dealer. Sales, service, support, valid warranties. It's why thousands of clients around the world choose GoKeyless™ for their security and access control needs each year. The most advanced combination lock ever created. The Master Lock Model No. 4400D bluetooth padlock is a portable combination padlock with a smartphone controlled locking system. Everything else in your life is connected, its time to get serious about your security. The smartphone app offers speed, ease of use, & greater control with the ability to share access; with keyless convenience. The locking mechanism features anti-shim technology, offering maximum security. The 1 Year Limited Warranty provides peace of mind from a brand you can trust. The model 4400D is made for indoor lockers. The dimensions are a perfect fit for standard lockers at schools, gyms, and clubhouses. Also available is the model 4401DLH which is great for outdoor usage.

2 7/8 (H) x 2 7/32 (W) x 1 (D)

Shackle Dimensions

A: 11/32in (9mm) B: 2in (51mm) C: 15/16in (23mm)

Access Type

Combo, Smartphone/App

Code Capacity

Single backup directional combination, Unlimited with App

Smartphone Compatibility

Android 5.0 or later, iOS 10 or later

Wireless Protocol

Bluetooth BLE

Battery Type


Battery Life

2 Years

Battery Back-up





Master Lock


Master Lock




1 lbs


1 Year Manufacturer



Share your thoughts!

2.75 out of 5 stars

4 reviews

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What others are saying

  1. SHort life span

    Andrew (verified owner)

    My HOA purchased 6 of these 2-1/2 years ago. We’ve replace all of them at least once under warranty, plus a couple that were not covered under the warranty (some taking a hammer to them because they failed is not covered). Master Lock’s customer service has been good, but we are considering ditching these for a better system.

    One had to be replaced because the battery died and 9 volt battery connection didn’t work. One didn’t like cold temps. The rest just quit working.

    (0) (0)

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  2. Crest Over Katy Trail HOA (verified owner)

    Great product, works well

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  3. These are not worth it.

    Topiarius (verified owner)

    Unfortunately after giving these locks (4 at a time) two tries / two different batches, they failed to work. The technology isn’t there and just ended up frustrating the staff. They’d work for one person and then stop working for everyone. Even after speaking with Master Lock tech, they couldn’t solve the issues either.

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  4. Good locks. Slight issue but Go Keyless corrected it right away

    Dean (verified owner)

    The locks work well with the App and managing who can unlock them. One of the locks metal snapped after first use but Go Keyless fixed it right away. They were great!

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...




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Customer Questions & Answers

  1. Answered by the admin

    You are able to restrict access of a mobile credential to only have access between certain dates. However, this restriction will need to be set to each code individually. 

  2. Answered by the admin

    The audit trail for this lock will show the user name of the code that was used on the lock. It is entirely up to your preference on how many codes you would like to use at once on this device.

  3. Q How many users can one padlock have at one time? answer now
    Asked by Tony McKenna on December 9, 2019 5:32 PM
    Answered by the admin

    There is no limit to the number of smartphone users that can access this lock via Bluetooth. However, only 6 manual combination codes can be active on the lock at a time.

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