Master Lock 4401DLH

Outdoor Bluetooth Padlock

Reviews (3) | Customer Questions (7)


Volume pricing applied in cart

In stock

SKU: 4401DLH
Your Current Selections:
  • Use your smartphone to open your lock
  • Never worry about a forgotten combination!
  • Share access with others – temporary or permanent
  • Share 24/7 access or limit to days or nights
  • Monitor access history & receive tamper alerts
  • Backup access using directional code on lock keypad
  • Low battery notification & reminder on padlock and in app
  • Comes with easy to replace CR2450 battery
  • Battery jump allows for temporary access if battery dies while locked
  • Hardened boron alloy shackle for superior cut resistance

Get the Master Lock Vault eLocks app – for iOSfor Android

Best Used For:

  • Residential Gates & Fences
  • Storage Lockers
  • Sheds, workshops & garages
  • Tool chests & tool boxes
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. 4401DLH bluetooth outdoor 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 4401DLH is made for the outdoors and can protect anything from gates and fences to shed and tool boxes. Also available is the model 4400D which is great for indoor locker usage.
Shackle Diameter

11/32in (9mm)

Shaft Material

Boron Alloy


Master Lock

Battery Type


Access Type

Combo, Smartphone/App


Master Lock

Wireless Protocol

Bluetooth BLE


1 Year Manufacturer

Share your thoughts!

4 out of 5 stars

3 reviews

Let us know what you think...

What others are saying

  1. Rose Niederhauser (verified owner)

    I think is very secure or at list I hope

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  2. Love it!

    George Small

    This is my second master lock 4401 DLH and I love it. Having to not worry about a key or combination is worth it. Like any other app you have to open and tap the lock icon which is not very difficult. The only challenge I see is with the lock sharing. Master Lock upgraded their eLock app which is fine. The issue is sharing the lock with someone else. In the past you were able to put the persons phone number in and the link would be sent. Now with the upgrade, you submit the name and you send. The question is “how do they receive notification?” I’ve sent a message to Master Lock and have yet to receive a response. I’m sure they are short staffed due to Covid-19. Hopefully I will receive a response.

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  3. Disappointed

    C G Costello (verified owner)

    This lock is not as easy to use as I had hoped. By the time you get your phone out and pull up the app I could have easily put in 4 numbers on a combo lock and opened it. And sharing the up, down, left right with someone else to let them have access is a bit confusing when they are not looking at the lock. I wouldn’t recommend this lock but will continue using it as long as it works.

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Customer Questions & Answers

  1. Q Is it waterproof? answer now
    Asked by Cc on July 13, 2020 7:10 PM
    Answered by the admin

    The lock is water-resistant and is designed for outdoor use. 

  2. Answered by the admin

    This does not use fingerprints it uses a directional keypad or Bluetooth phone connection. 

  3. Answered by the admin

    At this time they do not offer different shackle sizes for this lock. 

  4. Answered by the admin

    Yes, there is a manual that it comes with that explains how it operates as well as how you check audit through the Masterlock App. 

  5. A This lock and shackle will work with your application. This is the outdoor rated model as well and will hold up with your Job box conditions.
  6. Q How is the keypad programmed and how long is the shackle answer now
    Asked by LARI on April 27, 2017 12:07 AM
    Answered by the admin

    The padlock does not use a keypad but a directional pad that can be changed via the Masterlock app that must be downloaded and connected to the specific padlock. Everything is done securely via Bluetooth and special codes. As for the shackle dimensions, it is as follows: 11/32in (9mm) x 2in (51mm) x 15/16in (23mm).


  7. Answered by the admin

    You do need to be within Bluetooth range of the lock. 

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