Brand | Master Lock |
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Special Feature | Keyless, Alarm |
Lock Type | Keypad |
Item Dimensions LxWxH | 5.29 x 2.22 x 1.1 inches |
Material | Metal |
Recommended Uses For Product | Security |
Style | Outdoor |
Color | Black |
Number of Pieces | 2, 9 |
Finish Type | Polished |
Controller Type | iOS, Android |
Item Weight | 12.46 ounces |
Control Method | App |
Connectivity Protocol | Bluetooth |
Manufacturer | Master Lock |
Part Number | 4401DLH |
Item Weight | 12.5 ounces |
Product Dimensions | 5.29 x 2.22 x 1.1 inches |
Item model number | 4401DLH |
Batteries | 1 Lithium Metal batteries required. (included) |
Is Discontinued By Manufacturer | No |
Size | 1 Pack |
Finish | Polished |
Item Package Quantity | 1 |
Special Features | Keyless, Alarm |
Batteries Included? | Yes |
Batteries Required? | Yes |
Battery Cell Type | Alkaline |
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Ships from: Hearthshire Sold by: Hearthshire
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Ships from: PLEXSUPPLY. Sold by: PLEXSUPPLY.
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90% positive over last 12 months
90% positive over last 12 months
99% positive over last 12 months
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Master Lock Padlock, Outdoor Personal Use Bluetooth Lock, 2-7/32 in. Wide, 4401DLH
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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
Customer ratings by feature
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This Item Master Lock Padlock, Outdoor Personal Use Bluetooth Lock, 2-7/32 in. Wide, 4401DLH | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | $126.94$126.94 | $58.99$58.99 | $38.99$38.99 | $38.99$38.99 | $59.99$59.99 | $69.99$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
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
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Share AccessSchedule guest access via app or share temporary access via manual codes. |
Monitor ActivityView lock history, including registration, guest addition/deletion, and unlock/open/relock activity. |
Low Battery AlertsPadlock and app notifications. |
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Customer Review: Sharing is better, for a short while.
Gary M. Talarico
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Master Lock 4400D & 4401DLH
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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
ASIN | B01A65T7OI |
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Customer Reviews |
3.7 out of 5 stars |
Best Sellers Rank | #200,313 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #418 in Combination Locks |
Date First Available | January 4, 2016 |
Warranty & Support
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Top Brand: Master Lock
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers 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
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
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
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
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
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
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
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
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
Reviews with images
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Top reviews
Top reviews from the United States
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I couldn't find a way for my wife to have permanent access to the lock with her own account, so she ended up signing into my account on her phone. This works but is not ideal.
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 primary owners phone is within Bluetooth range that a setting needs to be selected to prevent opening. For instance if the lock is on a pool cage and the phone is in Bluetooth range and powered - a child could still push the button on the lock to open it. Or if it's on a shed or something -- say in the middle of the night an intruder could do the same. It is preventable with a setting but I figured it out by stumbling on it. I'll be ordering more!
I did make contact with Master Lock about opening during heavy rainfall and if we could use de-icer on it in the winter. They were emphatic about relocking the lock as soon as possible and try to cover the lock from the rain while it is open. Some water "may" collect on the inside. However when locked it is well sealed.
They are to get back to me about the deicer. Regular locks we heat with a torch to open in the Winter after a freezing rain.
The four buttons on front are easier to hit a combo than dits and dahs of undetermined length done by other locks.
It appears to respond quicker to the phone on unlock and has a nice large icon on the lock to indicate interaction and green for it's unlocked.
Of the bluetooth locks I've researched So far this one appears to work best in our situation. A tow yard impound/accident lot.
Top reviews from other countries
El candado Master Lock es muy práctico ya que se empareja con el teléfono y al acercarte se conectan por bluetooth y se abre muy facilmente. A veces le cuesta un poco contectarse al teléfono pero en ese caso es muy sencillo ingresar la clave con el pad, es como un video juego, muchísimo más sencillo y rápido que con una combinación númerica tradicional, aunque la clave sea muy larga.
Además, en la app hay muchas opciones más, asiganr permisos a personas, limitar los permisos por días y horarios, asignar permisos temporarios, etc.
Por último, es de muy buena calidad y resistente al agua, no se oxida ni se comrpomete el funcionamiento. Vivo en una ciudad en la que llueve mucho y era importante que resistiera bien a la humedad porque está en el exterior. Al candado con clave númerica tradicional que teníamos antes se le endureciá el mecanismo cada vez que llovía, a pesar de ser para exterior.
Estoy muy satisfecho con este candado y lo recomiendo. Antes de comprarlo tenía dudas porque había leído algunos comentarios negativos, pero creo que debe ser que a esas personas lamentablemente tuvieron mala suerte. Pasan estas cosas con todos los productos electrómicos. Hay un pequeño margen de productos que pueden presentar fallas. Si me pasara lo cambiaría por otro candado nuevo porque funcionando correctamente es una joya.
In the winter it just froze shut and became unresponsive. It started in -5 degree Celsius weather, and then permitted the colder it got. I had to pour warm water over it just to unlock it. It's currently on my counter because it's not worth the trouble.
When it works (using a combination): 5/5 stars
App to unlock it via your phone: 1/5 stars
Winter: Completely inoperable.
Verdict: Look elsewhere. I was incredibly disappointed in this product. Master Lock could have and should have done so much better....