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Master Lock Padlock, Outdoor Personal Use Bluetooth Lock, 2-7/32 in. Wide, 4401DLH

3.7 3.7 out of 5 stars 369 ratings

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Purchase options and add-ons

Brand Master Lock
Special Feature Keyless, Alarm
Lock Type Keypad
Item Dimensions LxWxH 5.29 x 2.22 x 1.1 inches
Material Metal

About this item

  • For indoor and outdoor use; all-weather lock is best used for residential gates, sheds, garages, outdoor storage lockers and tool chests
  • Use your smartphone to unlock Bluetooth padlock, or enter directional code on lock keypad for easy backup entry when your smartphone isn't present (Wi-Fi connection is not required to operate)
  • Share temporary or permanent access via Bluetooth or keypad code with invited guests , monitor activity, and receive tamper and low-battery alerts all from your free Master Lock vault elocks app for Android and iOS. Designed for personal use, supporting up to 10 locks
  • Padlock includes a 2-piece weather cover, metal body construction, boron Carbide shackle, and anti-shim locking mechanism for improved strength, security, and weather resistance; Plus military-grade Bluetooth authentication and encryption
  • 2-7/32 in. wide lock body; 11/32 in. diameter shackle with 2 in. length, 15/16 in. width; extended length shackle for application flexibility; For answers to frequently asked questions, 2018 firmware updates, troubleshooting, and technical support, see document titled User Guide in the technical specifications section of this page
See more product details

Customer ratings by feature

Durability
3.7 3.7
Weatherproof
3.6 3.6
Sturdiness
3.6 3.6
Easy to use
3.5 3.5

Frequently bought together

$126.94
Get it as soon as Tuesday, Mar 26
In Stock
Sold by MARKSON Distribution corporations and ships from Amazon Fulfillment.
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$176.33
Get it as soon as Tuesday, Mar 26
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This Item
Master Lock Padlock, Outdoor Personal Use Bluetooth Lock, 2-7/32 in. Wide, 4401DLH
Master Lock Padlock, Outdoor Personal Use Bluetooth Lock, 2-7/32 in. Wide, 4401DLH
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Price$126.94$58.99$69.99$38.99$59.99$69.99
Delivery
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Customer Ratings
Easy to use
3.5
3.6
4.6
4.5
3.9
4.4
Weatherproof
3.6
4.4
4.7
4.1
5.0
Fingerprint reader
3.8
4.8
4.8
3.6
4.3
Sturdiness
3.6
4.0
4.0
Sold By
MARKSON Distribution corporations
YingTong Software
YingTong Software
YingTong Software
eLinkSmart US
eLinkSmart US
lock type
Keypad
Biometric
Biometric, Combination Lock
Biometric
Fingerprint, Smart, Key, Biometric
Fingerprint, Biometric, Smart, Heavy Duty
number of items
1
1
1
1
1
1
material
Metal
Zinc, Stainless Steel
Stainless Steel, Zinc
Stainless steel lock beam, Zinc alloy lock body
Alloy Steel, Zinc, Stainless Steel
Alloy Steel, Zinc, Stainless Steel
shape
Rectangular
Rectangular
Square
Rectangular
finish type
Polished
Polished
Dusting
Frosted
Polished
Polished
weight
0.78 pounds
0.62 pounds
0.71 pounds
0.3 pounds
0.8 pounds
0.9 pounds

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From the manufacturer

outdoor bluetooth
outdoor, phone, app, open

Access Remastered

  • Free Master Lock Vault Home app is designed for personal use, supporting up to 10 locks
  • Keyless convenience: No need to worry over lost keys or forgotten combinations
  • Durable full body all-weather cover protects internal lock components
  • Gain greater flexibility and control: The Bluetooth padlock that allows you to share temporary or permanent access with guests or coworkers
  • Monitor access history and receive tamper alerts
  • Simple backup access using directional code on lock keypad
  • Easy to replace, readily available CR2 batteries (included)
  • Receive low battery notifications on padlock and in app
  • Battery jump feature provides temporary power if battery dies while lock is locked
  • Master Lock Bluetooth products are authorized to operate in the following countries: United States, Canada, Mexico, the European Union, Australia, New Zealand, Brazil, Chile, South Africa, Thailand, & Vietnam

Key Features

Share Access

bluetooth padlock

bluetooth padlock

Share Access

Schedule guest access via app or share temporary access via manual codes.

Monitor Activity

View lock history, including registration, guest addition/deletion, and unlock/open/relock activity.

Low Battery Alerts

Padlock and app notifications.

Master Lock For Everything Worth Protecting

Product guides and documents

Looking for specific info?

Product Description

The Master Lock 4401DLH Bluetooth Padlock features a 2-7/32in (56mm) wide metal body for durability. The 11/32in (9mm) diameter shackle offers 2in (51mm) 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 know and can trust.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here. [PDF ]

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Customer reviews

3.7 out of 5 stars
3.7 out of 5
369 global ratings

Customers say

Customers are not happy with the battery life of the lock. They mention that it goes through batteries quickly and that the lock is difficult to open. Customers also have mixed opinions on performance, quality, ease of use, and value.

AI-generated from the text of customer reviews

115 customers mention43 positive72 negative

Customers are mixed about the performance of the lock. Some mention it works really well, while others say that it failed after two months. The concept and initial operations seemed great, but some customers find the lock not dependable and the app feature is unreliable.

"...It struggles to connect to the app on a good day , the locking mechanism often fails to engage and it has left us not only frustrated but has..." Read more

"...Aside from that, looks and feels like a quality product and works as advertised. I have been using it for two days so far...." Read more

"...These do not hold up in any type of weather. Until there are improvements stay away from all Bluetooth padlocks. Update...." Read more

"...The lock worked exactly as advertised, so then I put it on our gate and tested again. It worked, again as advertised...." Read more

115 customers mention51 positive64 negative

Customers are mixed about the quality of the lock. For example some mention it's an excellent, sturdy lock with well thought out features, while others say that it won't unlock or the locking mechanism often fails to engage.

"...;, but no matter how hard I pulled on the shank, the lock wouldn't open. Then the sound of the single-click indicated that the lock was locked...." Read more

"...Aside from that, looks and feels like a quality product and works as advertised. I have been using it for two days so far...." Read more

"...The code is not good after the 7 hour period and you can no longer unlock the lock with it until I send a new code." Read more

"Very sturdy lock with for the most part very well thought out features...." Read more

54 customers mention31 positive23 negative

Customers are mixed about the ease of use of the lock. Some mention that it's easy to use and set up, while others say that it takes quite some time and the instructions are lacking. The app could be more intuitive and the lock is finicky.

"Easy-ish setup through the IOS app and the lock is very sturdy...." Read more

"...The app could be more intuitive and I still haven't found how to revoke or modify temporary access and it should be made more clear that IF the..." Read more

"...Initial setup went fine. I installed the iOS app, setup the lock, and tested it a few times...." Read more

"Bought another few more! Was a great product, easy to use, functional, get the job done~! Great one!" Read more

31 customers mention12 positive19 negative

Customers are mixed about the value of the lock. Some mention it's a great buy, valuable, and strong, while others say it'd be better off buying a different lock.

"...An expensive piece of decoration. I would not recommend, 1 x star cos the concept is great...." Read more

"...In addition to that I also think that it has the best price in its class...." Read more

"A supremely bad product. I read some reviews, some said it sucked, other said it didn't, it fit the bill perfectly so I bought it...." Read more

"Good product" Read more

19 customers mention2 positive17 negative

Customers are dissatisfied with the battery life of the lock. They mention that it has battery issues, goes through batteries quickly, and has an internal battery power fault. Some say that the lock was shipped with a weakened battery.

"...There is nothing wrong with the battery but sometimes the lights just stop working...." Read more

"...you need to have stock in a battery company, the batteries only last about a month of very little use...." Read more

"...Battery life is terrible. I've had to replace the CR2 batteries almost monthly...." Read more

"...But, all of a sudden the lock stopped working. The battery was not dead, but it would not open. After many many attempts, it finally opened...." Read more

14 customers mention3 positive11 negative

Customers are dissatisfied with the ease of opening the lock. They mention that it would not open, they had to physically pull it open, and that it takes forever to open.

"...does not pop open when you unlock with your phone, you have to physically pull it open, which takes quite a bit of force...." Read more

"...It is not dependable. It never opens on the first try. There are two ways to open the lock...." Read more

"...is here on my kitchen table and I try the key pad every day and it will not open. It has a new battery in it, but it will not open...." Read more

"...The software makes it easy to turn access off or on for each customer or contractor...." Read more

8 customers mention2 positive6 negative

Customers are dissatisfied with the fit of the lock. They mention that the shackle is too large to fit the area they intended to use it, the hasp is quite thick, and it won't fit on standard lockers in schools and gyms. It also doesn't even fit in the latch for their gate.

"...Also will not fit on standard lockers in schools and gyms." Read more

"...It's so serious that it doesn't even fit in the latch for my gate! So, now I have to look for a new latch to go with my nice new lock!" Read more

"...keys or fixed combinations that I could not change so this lock fit the need very well. It has plenty of room on the locking loop and is waterproof...." Read more

"Works well, the shackle was much too large for what I had intended to use it for, purchased the smaller version for inside use only." Read more

4 customers mention0 positive4 negative

Customers are dissatisfied with the safety of the lock. They mention that it compromises their safety and security, and there is no warning.

"...engage and it has left us not only frustrated but has compromised our safety and security...." Read more

"...Now 2 of them are not working. NOT SAFE! if I needed to get out my gate or in i cant. Had to take the gate brackets apart to bypass the locks...." Read more

"...Sometimes it works. Sometimes it doesn’t. When it needs updating it doesn’t warn you. Sometimes it takes a long time to open...." Read more

"...I had it in use for 10 days. No warning , no yellow light saying the battery is dying. Nothing. Blue light this morning and locked it...." Read more

These locks fail regularly, but the concept is good
3 Stars
These locks fail regularly, but the concept is good
The premise behind these locks is perfect for my business. We have three gates that customers and contractors use to get into our facility. These locks allow us to give everyone 24-hour access while tracking who is and has been inside. The software makes it easy to turn access off or on for each customer or contractor. The ability to use an external 9-volt battery to gain access when the internal battery dies is very useful as well. We find these easy enough to learn to use. Our customers seem to grasp the instructions on how to use these pretty quickly.For these reasons we choose to use these locks. However, despite having only three gates to lock, we have purchased we over thirty of these locks in the last year. These locks fail regularly. I've included a picture of some of our failed locks. I keep a "lock Log" to keep track of how long they last and where we've deployed them (some gates are used much more than others - turns out that frequency of opening/closing is not related to how long the lock lasts). Our locks have lasted from as little as 5 days to 3 months. So even our longest lasting lock leaves a lot to be desired from a durability standpoint. I would expect to get at least a year of service, maybe even multiple years.Failures we've noticed:Lock will turn green but not "click" and open.Lock will turn green, click but not open.App will say the lock is open (even though it's locked) and not let you open it.Hasp will get stuck turned all the way away from the lock. Totally immobile hasp. We call this "Back Death."Lock will act like it has a dead battery but even using the external battery will not wake up.Locks sometimes get stuck locked. We use a cut-off wheel on a 4-inch grinder to open them.After it rains, the locks tend to act up more. Lately we spray them with wd-40 after the rain. Seems to help.Sometimes a new lock's battery will die in two weeks. Other times it will last until the lock stops working from something else.For a while we could buy these at the big box stores. When they failed we had good luck exchanging them for a new lock. The big box stores haven't had them in stock for about six months now, so we are buying online. That makes them harder to return/exchange. Plus, since we have to have a lock for our gates, and we have to be able to provide 24 hour access, we purchase locks to keep in inventory ready to be deployed when one fails. Sometimes the locks in inventory sit for 30 days or more before they are put into service. That also makes them harder to return.We still use though because we haven't found a comparable product, and the locks still pay for themselves in our business.The price has ranged from $80.00 to $150.00 depending on the source and the availability. Big box stores were the cheapest.Masterlock is truly on to a great concept here, but there needs to be some tweaking in the functionality for these locks to realize their full potential.
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Reviewed in the United States on March 26, 2017
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Top reviews from other countries

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Jason
5.0 out of 5 stars Five Stars
Reviewed in Canada on March 10, 2018
BERSAN
5.0 out of 5 stars Excelente calidad y practicidad
Reviewed in Mexico on August 2, 2018
8 people found this helpful
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Dylan
1.0 out of 5 stars High hopes met with massive disappointment...
Reviewed in Canada on January 11, 2018
2 people found this helpful
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Vicky Minich
5.0 out of 5 stars Love this lock
Reviewed in Canada on November 21, 2017
Cristhian Mauricio Guzman Sandoval
4.0 out of 5 stars Practico y cómodo, cumple lo que ofrece.
Reviewed in Mexico on October 29, 2018
One person found this helpful
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