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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 Wednesday, Mar 20
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$179.99
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$111.68
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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$38.99$38.99$59.99$69.99
Delivery
Get it as soon as Wednesday, Mar 20
Get it as soon as Wednesday, Mar 20
Get it as soon as Wednesday, Mar 20
Get it as soon as Wednesday, Mar 20
Get it as soon as Wednesday, Mar 20
Get it as soon as Wednesday, Mar 20
Customer Ratings
Weatherproof
3.6
4.4
4.7
4.7
4.0
5.0
Easy to use
3.5
3.6
4.6
4.6
3.8
4.4
Fingerprint reader
3.8
4.8
4.8
3.6
4.3
Sturdiness
3.6
4.0
4.0
Easy to lock
4.3
5.0
5.0
Sold By
PLEXSUPPLY.
YingTong Software
YingTong Software
YingTong Software
eLinkSmart US
eLinkSmart US
lock type
Keypad
Biometric
Biometric
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 lock beam, Zinc alloy lock body
Stainless steel lock beam, Zinc alloy lock body
Alloy Steel, Zinc, Stainless Steel
Alloy Steel, Zinc, Stainless Steel
shape
Rectangular
Square
Rectangular
finish type
Polished
Polished
Frosted
Frosted
Polished
Polished
weight
0.78 pounds
0.62 pounds
0.3 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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Master Lock Padlock, Outdoor Personal Use Bluetooth Lock, 2-7/32 in. Wide, 4401DLH


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Top Brand: Master Lock

Highly Rated
4.5/5 star rating from 100K+ customer ratings
Trending
100K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand

Important information

To report an issue with this product or seller, click here.

Customer reviews

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

Customers say

Customers are happy with appearance of the lock. However, some customers have reported issues with value, battery life, and connectivity. They say it's definitely not worth the price and that it eats batteries like crazy. Customers also have different opinions on quality, performance, and ease of use.

AI-generated from the text of customer reviews

9 customers mention9 positive0 negative

Customers like the appearance of the lock. They mention that it has a very cool concept and looks great. Some recommend it, saying that the concept is great.

"...I would not recommend, 1 x star cos the concept is great. But something has definitely gone awry in the execution...." Read more

"Master Lock Padlock looks great. It was easy to set up...." Read more

"This lock is really nice and sleek. The bluetooth capability is great and the connection works perfect...." Read more

"Very cool concept. Execution is sub par. It’s finicky as hell. Sometimes it works. Sometimes it doesn’t. When it needs updating it doesn’t warn you...." Read more

115 customers mention50 positive65 negative

Customers are mixed about the quality of the lock. Some mention that it's an excellent lock with for the most part very well thought out features, while others say that the lock wouldn't open, the locking mechanism often fails to engage, and the app will say the lock is open even though it' s locked.

"...;, 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

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

93 customers mention42 positive51 negative

Customers are mixed about the performance of the lock. Some mention that it has worked really well for almost a year, while others say that it stopped functioning within 2 months of purchase. The software and the registration worked fine, but some say that when it doesn't work it is totally useless in every way. The lock only works if the app is running in the background on your phone, and it is not dependable.

"...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

"...So I bought another one. This one didn't play up at all ... just stopped working altogether after about 6 weeks or so...." Read more

"...Was a great product, easy to use, functional, get the job done~! Great one!" 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

52 customers mention27 positive25 negative

Customers are mixed about the ease of use of the lock. Some mention that the product was easy to use, the Android app software setup was ok, and the primary code easy to press and use. Others say that the app could be more intuitive, has trouble connecting with the phone app, and that the setup was pretty complicated for something that is controlled by a phone.

"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

"...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

27 customers mention5 positive22 negative

Customers are dissatisfied with the value of the lock. They mention that it is definitely not worth it, a piece of junk, and not the quality they have come to expect from Masterlock. Some customers also say that the lock has many glitches and is unsatisfactory. They will be returning the lock to Amazon.

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

"...After two months it failed. Concept great but the quality of the piece is trash...." 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

"...Sadly however these locks have proved to be of very poor quality and have a very short life...." Read more

21 customers mention5 positive16 negative

Customers are dissatisfied with the battery life of the lock. They mention that the battery dies after a few weeks, and it eats batteries like crazy. Some customers also report that the lock has an internal battery power fault.

"...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

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

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

11 customers mention0 positive11 negative

Customers have connectivity issues with the lock. They mention that the app is horrible, the Bluetooth function is hit or miss, and the lock stops communicating with their phone. The app also has poor service and quality control. Customers also complain about the long delay in opening the lock and the fact that the lock forces them to share their phone number when they sign up.

"...I also am deducting a star because the app forces you to share your phone number when you sign up - I assume I’ll be getting spam calls any day now...." Read more

"...that you are in the presence of the lock resulting in a long delay in opening timely.4. Common errors are not listed in the help section..." Read more

"...The Bluetooth function was hit or miss, however...." Read more

"...The only problem I seem to have with this lock is sharing access...." Read more

6 customers mention0 positive6 negative

Customers have negative opinions about the fit of the lock. For example, they mention that the hasp is quite thick and may not fit their intended area, it will not fit on standard lockers in schools and gyms, or a normal storage shed latch. Some customers are also disappointed with the fit on their gate latch.

"...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

"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

"Unfortunately it will not fit on a normal storage shed latch" 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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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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