Master Lock’s New Bluetooth® Padlocks


Introducing Master Lock’s first Bluetooth® Smart Padlocks, Model No. 4400D and 4401DLH. Master Lock’s new Bluetooth® technology eliminates the inconvenience of physical keys or forgotten combinations. With Master Lock Vault® eLocks, you will be able to unlock your lock, share access with guests, and get tamper alerts all in one place.

Best Used For

    4400D Indoor Bluetooth® Smart Padlock

  • Indoor Storage Lockers
  • School, Employee, and Athletic Lockers
  • Storage Cabinets

    4401DLH Outdoor Bluetooth® Smart Padlock

  • Garage / Storage Shed
  • Tool Chest / Box
  • Storage Locker
  • Fences

Getting Started:

    Once you purchase and receive your padlock you can download and sign up for Master Lock Vault® eLocks. From there you can register your lock by entering in your Activation Code:

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Your primary code will be directly adjacent to the activation code. Make sure to save the primary code somewhere safe like Master Lock Vault®. After activating your lock you can unlock your padlock by using the primary code or with your mobile device.

How to Unlock the 4400D and 4401DLH
When you have your mobile device you can use the lock’s bluetooth capability to unlock the padlock:

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When your phone is not available you can unlock your padlock using the directional keypad:

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If your padlock dies in the locked position you can jump the contact point:

   Master Lock® Model No. 4400D

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Master Lock® Model No. 4401DHL

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Bluetooth® technology allows these padlocks to go above and beyond the average padlock. You can permit temporary access to a friend by allowing their phone to have guest access, without the worry of losing keys or sharing combinations. Also, when you are away from your lock you can receive tamper alerts straight to your smartphone. Protect what matters most and more, with Master Lock’s Bluetooth® Padlocks.

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