Master Lock 4401DLH Outdoor Bluetooth Smart Padlock

Master Lock 4401DLH Outdoor Bluetooth Smart Padlock

Master Lock 178D Combination Padlock

Master Lock 178D Combination Padlock

Master Lock 4400D Indoor Bluetooth Smart Padlock

90% of 100
Master Lock 4400D Indoor Bluetooth Smart Padlock 2-inch Wide Body 7/8-inch Shackle Clearance 9/32-inch Shackle Diameter
Special Price $63.74 was $127.49
In Stock - More than 100 Available!
Currently 7 Available
Master Lock 4400D Indoor Bluetooth Smart Padlock is available to buy in increments of 1

Your Smartphone is the Key!

Master Lock Bluetooth® Smart Padlocks turn your smart device into a key! With an advanced, easy-to-use app, you don't have to worry about losing keys, forgetting combinations, or unauthorized key duplication. True keyless convenience provides greater control and flexibility as you share access with friends, family, colleagues and employees. Enjoy peace of mind as you monitor the lock's activity and recieve tamper alerts and low battery notifications. With anti-shim technology offering maximum security, these padlocks combine ergonomic features with strength, durability and reliability, making them the perfect choice for use at home, office, job site or school.

A Smarter Padlock!

Share Access
Schedule guest access days, nights or 24/7; share temporary access via manual code.

Monitor Activity
View lock history, including registration, guest addition/deletion, unlock/open/relock activity, tamper and low battery alerts.

Tamper Alerts
Multiple unsuccessful keypad entry attempts trigger email and app notifications.

Low Battery Alerts
Padlock LED, email and app notifications.


Key Features:

  • Your smartphone is the key to your padlock - no more lost keys or forgotten combos!
  • With free app, enjoy speed & ease of use, share access, have greater control with temporary digital keys/codes
  • Receive tamper alerts & low battery notifications
  • Replaceable CR2450 battery can be jumped with an external battery if the battery dies in the locked position
  • Backup access using an up/down/left/right directional code on the lock keypad
  • Easily add/remove guests & schedule guest access to 24/7 or limit to days or nights
  • Locker Mode allows for maintaining a locked state while the phone is stored inside of a locker
  • Lock history log tracks important lock events
  • Hardened boron alloy shackle for superior cut resistance
  • 2" (51mm) wide metal lock body
  • Shackle diameter .281" (7mm); shackle clearance: 7/8" (22mm) high, 13/16" (20mm) wide
  • Designed for indoor applications
  • Warranty Info:  Limited One (1) Year Warranty. Visit for complete warranty details.
More Information
Manufacturer Master Lock
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4400D Specs


How long will the 4400 series battery last?
The 4400 series battery should last at least 2 years in Touch Unlock Mode and 4 months in Swipe Unlock Mode with regular use.
What if my phone is lost or stolen?

Reset Keys allows the lock Owner to revoke all Bluetooth access to the lock

Register and Add Your Lock Replace Your Battery - Indoor Model 4400D Bluetooth Smart Padlocks Get Started Bluetooth Smart Padlocks - Informational

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