The Master Lock No. 4400D Bluetooth Smart Padlock features a 1-29/32 in. (47 mm) W metal body for durability. The 9/32 in. (7 mm) Dia shackle offers 7/8 in. (22 mm) vertical clearance and is made of boron alloy, offering maximum resistance to cutting and sawing. The smartphone/app interface offers speed, ease of use and 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.
Use your smartphone to open your lock with the free Master Lock vault elocks app for Android and iOS. Designed for personal use, supporting up to 10 locks
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 and receive tamper alerts
Backup access using directional code on lock keypad
2-piece weather cover for maximum outdoor protection
Low battery notification and reminder on padlock and in app
Comes with easy to replace CR2 battery
Battery jump allows for temporary access if battery dies while locked
Locker mode setting allows for storage inside a locker
Hardened boron alloy shackle for superior cut resistance
Features
Item Weight
.506
Keys & Accessories Product Type
Padlock
Lock Type
Electronic
Adjustable shackle
No
Coated
N
Color
SILVER
Color Family
Black
Lock material
Zinc
Hub Required
No hub connection available
Returnable
180-Day
Requires Hub?
No Hub Required
Locking mechanism
Ball bearing
Remote Access
No Remote Access
Power Options
Battery
Smart Home
Smart Home Enabled
Weatherproof
No
Works With
Proprietary App
Product Weight (lb.)
.506
Material
Zinc
Number of locks in pack
1
Shrouded shackle
No
Lock Product Type
Padlock
Smart Home Protocol
Bluetooth
Voice Control Hub Required
No Voice Control
Product Width (in.)
1.85
Body width (in.)
2
Product Height (in.)
3.15
Shackle diameter (in.)
0.281
Shackle clearance (in.)
0.875
Product Depth (in.)
1.06
Manufacturer Warranty
1 Year Limited
*Third Party Trademarks
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
Why choose us
The Arbor Way
• Lowest Prices. Easy Online Shopping. Fast Delivery.
• No lines. No holds. No Hassles.
• America's Largest Inventory Network for All Home Improvement Supplies Nationwide.