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Master Lock 5.43 in. H X 1.71 in. W X 2.43 in. L Metal Single Locking Bluetooth Bluetooth Padlock

Control access from your phone while a shrouded shackle keeps bolt cutters from getting a grip.
Master Lock MPN 6400SHENT In Stock & Ready to Ship
$239.99
Free shipping on orders over $75
Ships within 24 hours · most orders arrive in about 2 business days

About Product Overview

This Master Lock shrouded padlock brings Bluetooth control to a job that usually still runs on keys and combos. The shrouded design covers the shackle sides, so bolt cutters and cable cutters have less to grab onto - a real plus on gates, sheds, lockers, or anywhere the lock sits out in the open and takes abuse. Because it's smart-enabled, you can manage access from your phone instead of cutting keys or handing out a combo everyone eventually shares.

The shackle is adjustable and made of metal, and the body is finished in black to match most hardware and blend into darker surroundings. It's a single-locking mechanism, not rekeyable, and ships one per box - straightforward, no extra parts to track. Good fit for anyone who wants smart access control without giving up the toughness of a standard shrouded padlock.

  • Bluetooth smart-enabled padlock with numeric combination backup
  • Shrouded shackle design resists bolt cutter and cable cutter attacks
  • Adjustable metal shackle, 11/32" diameter, 0.75" height, 0.88" width
  • Black finish, single locking mechanism
  • Not rekeyable; not TSA approved; not keyed alike
  • Made in Mexico; 1.98 lb

The Details Specifications

Ships Ground Travels by ground for safe handling — common for items with a lithium battery, aerosol, or liquid inside. Nothing extra to do on your end; it simply ships by truck instead of by air.
Brand Master Lock
Model / MPN 6400SHENT
UPC 071649350283
Weight 2 lbs
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

Go ahead. Check.

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On Amazon, start with these four questions before you click buy.

01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for Master Lock. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

The big boxes don't care if your hardware store survives.

Amazon, Home Depot, and Lowe's are built to pull every hardware dollar out of your town. When the local shop can't keep the lights on, the counter where somebody actually knew which part you needed goes with it. We're built the other way: real brands so you're never stuck on a marketplace, and a straight answer to buy it down the street when that's the better call. Support independent hardware — it doesn't restock itself.

Why we tell you to shop local
Authorized dealer · Master Lock

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Why we built NHG
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