Master Lock 4400EC

Bluetooth Indoor Padlock


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 padlock is ideal for facilities and work sites looking to improve security and accountability with robust audit trail features.

In stock

SKU: 4400EC
Your Current Selections:

Need assistance or have questions? Call our Cabinet Product Specialists at 877-439-5377 for more information and ordering assistance. We’re here to help!

Need assistance or have questions? Call our Commercial Product Specialists at 877-439-5377 for more information and ordering assistance. We’re here to help!

  • Bluetooth enabled indoor padlock
  • Hardened boron alloy shackle for superior cut resistance
  • Works with both the Master Lock Vault Home App for personal use and Master Lock Vault Enterprise for business use
  • Use your smartphone to open and manage your lock
  • 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

  • School, employee, and athletic lockers
  • Indoor storage lockers
  • Tool chests and boxes

Note: This model replaces the Master Lock 4400D and 4400ENT padlocks

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.


1 7/8 (H) x 1 3/4 (W) x 1 (D) in.

Shackle Dimensions

A: 9/32in (7mm) B: 7/8in (22mm) C: 13/16in (20mm)

Access Type

Combo, Smartphone/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!

Let us know what you think...

What others are saying

There are no contributions yet.




Creating an account will allow you to easily place repeat orders, track them, and get first access to promotions and discounts!

Your privacy — along with your trust in our products and service — is very important to us. Rest assured GoKeyless RESPECTS your privacy. privacy policy

Continue as a Guest

Don't have an account? Sign Up

Customer Questions & Answers

  1. A

    You can manage access to this using the Mater Lock Vault mobile app and web portal. With the Master Lock Vault app you can grant someone (or many people) access, so they could download the app and use the Bluetooth credential you provided to them to lock and unlock the lock with their mobile phone. You can also revoke someone's access through the app. 

Send me a notification for each new answer.