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Master Lock Padlock, Indoor Personal Use Bluetooth Lock, 1-29/32 in. Wide, 4400D

3.7 3.7 out of 5 stars 325 ratings

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Purchase options and add-ons

Brand Master Lock
Special Feature Keyless
Lock Type Keypad
Item Dimensions LxWxH 3.06 x 2 x 1.1 inches
Material Metal

About this item

  • For indoor use; compact design is best used for school, employee, athletic, and indoor storage lockers
  • Use your smartphone to unlock Bluetooth padlock, or enter directional code on lock keypad for easy backup entry when your smartphone isn't present; Disabled mode setting allows for smartphone storage inside a locker (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 Home app for Android and iOS. Designed for personal use, supporting up to 10 locks
  • Padlock includes metal body construction, boron carbide shackle, and anti-shim locking mechanism for improved strength and security; Plus military-grade Bluetooth authentication and encryption
  • 1-29/32 in. wide lock body; 9/32 in. diameter shackle with 7/8 in. length, 13/16 in. width
  • For answers to frequently asked questions, troubleshooting, and technical support, see document titled User Guide in the technical specifications section of this page
  • 1/21/20 app update: Master Lock launched Master Lock Vault Home to replace Master Lock Vault eLocks. Master Lock Vault Home features an enhanced user experience, improved functionality, and allows you to import your locks and guests from your current account
See more product details

Customer ratings by feature

Durability
4.7 4.7
Sturdiness
4.2 4.2
Easy to use
3.7 3.7

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$124.89
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This Item
Master Lock Padlock, Indoor Personal Use Bluetooth Lock, 1-29/32 in. Wide, 4400D
Master Lock Padlock, Indoor Personal Use Bluetooth Lock, 1-29/32 in. Wide, 4400D
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Price$124.89$99.99$59.99$10.99$69.99$69.99
Delivery
Get it as soon as Sunday, Mar 17
Get it as soon as Sunday, Mar 17
Get it as soon as Sunday, Mar 17
Get it as soon as Sunday, Mar 17
Get it as soon as Sunday, Mar 17
Get it as soon as Sunday, Mar 17
Customer Ratings
Easy to use
3.7
3.8
4.3
4.5
4.4
Sturdiness
4.2
4.0
4.2
Weatherproof
4.0
4.1
5.0
Fingerprint reader
3.6
4.6
4.3
Sold By
PLEXSUPPLY.
Amazon.com
eLinkSmart US
TravelMore
YingTong Software
eLinkSmart US
lock type
Keypad
Key Lock
Fingerprint, Smart, Key, Biometric
Combination Lock
Biometric, Combination Lock
Fingerprint, Biometric, Smart, Heavy Duty
number of items
1
1
1
1
1
material
Metal
Plastic
Alloy Steel, Zinc, Stainless Steel
Steel
Stainless Steel, Zinc
Alloy Steel, Zinc, Stainless Steel
shape
Rectangular
Square
Square
Rectangular
Rectangular
Rectangular
finish type
Polished
Polished
Polished
Dusting
Polished
weight
0.1 pounds
0.5 pounds
0.8 pounds
0.71 pounds
0.9 pounds

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Product guides and documents

Product Description

Master Lock Padlock, Indoor Personal Use Bluetooth Lock, 1-29/32 in. Wide, 4400D

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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.
User Manual Manual [PDF ]

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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

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Customer reviews

3.7 out of 5 stars
3.7 out of 5
325 global ratings

Customers say

Customers like the appearance of the lock. They mention that it does not work well, the WiFi part rarely works, and the battery life is poor. Customers are mixed on quality, connectivity, and ease of use.

AI-generated from the text of customer reviews

7 customers mention5 positive2 negative

Customers like the appearance of the lock. They mention that it's good looking and a really cool product.

"The idea of the product is really cool but the execution is still leaving something to be desired...." Read more

"...I couldn't get over it, I told lots of friends about it. And it's good looking too!" Read more

"...The other is that the app is really poorly designed...." Read more

"...And it looks nice, too!" Read more

5 customers mention5 positive0 negative

Customers appreciate the value of the lock. They say it's a reliable and affordable lock that provides tracking.

"...It really isn't that expensive compared to some other products out there, and I like the choice of Bluetooth over NFC...." Read more

"...Good price for the quality and ability to use with smartphone to unlock. Use for my locker onboard ship" Read more

"Quick Delivery and good price!" Read more

"Affordable lock that provides tracking...." Read more

84 customers mention45 positive39 negative

Customers are mixed about the quality of the lock. Some mention that it works great, while others say that it doesn't work at all. The Bluetooth sync works great and the lock is sturdy. However, some customers have reported issues with the UX and the ability to unlock the lock manually.

"...It so far has made it very easy to keep my indoor storage unit locked without needing a key, allowing me to share the lock with other people that..." Read more

"...open the lock again before the lock's mechanism clicks, it will remain unlocked. Even if you close it, it will still be openable...." Read more

"Id love to give this lock a little more love. The lock is sturdy. The Bluetooth sync works great.The problem is the UX. It is so complex...." Read more

"...The app was terrible and the instructions written in broken English. Could never get it to work after several hours of attempts...." Read more

52 customers mention31 positive21 negative

Customers are mixed about the connectivity of the lock. Some mention that it works great with the phone app, while others say that the Bluetooth connectivity is poor and the lock consistently refuses to pair with their phone.

"...Works as advertised, has no problems functioning in a steamy gym locker room environment...." Read more

"...beta swipe to open...then nothing...the lock has powered down and no response...not even the battery jump would wake it......" Read more

"...Works great with the phone app. My only concern is the very easy access to the battery." Read more

"...Even after I restart Bluetooth on my phone, it only connects sometimes...." Read more

24 customers mention13 positive11 negative

Customers are mixed about the ease of use of the lock. Some mention that it is easy to use, convenient, and durable of a quality trusted brand name, while others say that the lock for multiple users is not intuitive, the setup for it was confusing, and the instructions have not worked.

"...Having both options to open it is very convenient to me...." Read more

"...The app was terrible and the instructions written in broken English. Could never get it to work after several hours of attempts...." Read more

"The lock itself is easy to operate the act of sending a temporary code is much harder than it should be and the notification with the timeline of..." Read more

"...The interface looks outdated and is confusing to use, and the instructions in the box actually point you to download the wrong app for it...." Read more

32 customers mention0 positive32 negative

Customers are dissatisfied with the performance of the lock. They mention that it does not work well, is useless, and has poor execution. The WiFi part rarely works, and the lock does not open with a dead battery. Overall, customers are disappointed with the lock and its performance.

"...Could never get it to work after several hours of attempts.I returned it and bought this instead...." Read more

"...So now I am out the cost of this lock because it truly is garbage...." Read more

"...off the door which has destroyed my door because the stupid thing would not work at all. I’ll never use master lock again...." Read more

"...We tried it and it did not work well with his locker set up. It was very tight around the shank...." Read more

22 customers mention0 positive22 negative

Customers are dissatisfied with the battery life of the lock. They mention that the battery died quickly, the lock had 1% battery life when they received it, and the lock is a very aggressive battery user. They say they had to change batteries every week and that the lock loves to eat through batteries.

"...after too many folks were playing around with it the battery lasted for about 3 months...then something happened.. I tried the a different opening..." Read more

"...The app that is required for this product is a very aggressive battery user as it immediatly starts running and does not stop unless you do a force..." Read more

"...My only complaint is that the lock had 1% battery life when I received it...." Read more

"...That new battery only lasted 4 days (two uses) and only lit the LED yellow (it was a band new Duracell)...." Read more

5 customers mention0 positive5 negative

Customers are dissatisfied with the ease of opening the lock. They mention that the technology is cool, but it opens when they just pull on it. The security is a little questionable, and the push button code will not open it.

"cool technology but it opens when i just pull on it. Security is alittle questionable" Read more

"This arrived with a dead battery, which means I can't even open it, never mind use it to secure my locker...." Read more

"...I use it in my gym and it just doesn't open every time. I may have to try up to 10 times before it opens...." Read more

"...Who designs a bluetooth padlock that has no way of manually opening in case the digital mechanics fail? Master Lock that's who!..." Read more

Complicated, over cooked mobile exp. is a big letdown.
2 Stars
Complicated, over cooked mobile exp. is a big letdown.
Id love to give this lock a little more love. The lock is sturdy. The Bluetooth sync works great.The problem is the UX. It is so complex. I spend 10 mins at the gym trying to make it lock. One time I thought it was locked, but it wasn't.How hard is it to have an app that has a locked image on it, you hit a button and it unlocks and shows that on the display.Too many features and different user paths, worrying about web based profiles and locker mode - they forgot the basic principle. I wish I'd bought another brand and currently force myself to use it over a traditional lock just coz I spent $$ on it.Design your app like Apple did the iPod. One button that clearly makes it lock and unlock. Forget the other stuff for now.
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Top reviews from other countries

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Darren Head
5.0 out of 5 stars Works great, very convenient. Don't lose your phone.
Reviewed in Canada on July 28, 2020
Maggie
5.0 out of 5 stars Works great
Reviewed in Canada on January 16, 2021
Marcelo
1.0 out of 5 stars No volvere a comprar ningun candado MasterLock en mi vida.
Reviewed in Mexico on January 11, 2020
One person found this helpful
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Rockaleta
5.0 out of 5 stars EXCELENTE PRODUCTO
Reviewed in Mexico on June 3, 2019
David De Backer
1.0 out of 5 stars Unreliable in my experience
Reviewed in Canada on November 13, 2018
5 people found this helpful
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