Hover over image to zoom

Model No. 4400D

1-29/32in (47mm) Wide Bluetooth Padlock

Product Locator

Request A Quote

Learn about our products from a Master Lock Sales Representative.

View My Quote List

Overview & Features

Product Features

  • Use your smartphone to open your lock with the free Master Lock® Vault Home app
  • Never worry about a forgotten combination!
  • Share access with others - temporary or permanent
  • Share 24/7 access or limit to days or nights
  • 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
  • Locker Mode setting allows for storage inside a locker

Product Details

The Master Lock No. 4400D Bluetooth Padlock features a 1-29/32in (47mm) wide metal body for durability. The 9/32in (7mm) diameter shackle offers 7/8in (22mm) vertical clearance and is made of boron alloy, offering maximum resistance to cutting and sawing. The smartphone/app interface 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.

Product Specifications

  • Product Number 4400D
  • Description Retail Carded Packaging
  • Shelf Pack Qty 2
  • Master Carton Qty 8
  • Body Width 1-29/32in (47mm)
  • Shackle Dimensions A: 9/32in (7mm) B: 7/8in (22mm) C: 13/16in (20mm)
  • Color Silver and Black
MLCOM_PRODUCT_schematic_4400D.jpg
Click image to zoom

Service & Support

Manuals

Manuals & Downloads

FAQs

Frequently Asked Questions

  • Where can I find the app?
  • How do I find the Activation Code in the packaging?
  • What phones are the locks and lock boxes compatible with?

Testimonials