To see product details, add this item to your cart. You can always remove it later.
FREE Returns
Added to

Sorry, there was a problem.

There was an error retrieving your Wish Lists. Please try again.

Sorry, there was a problem.

List unavailable.

Master Lock Lock Box, Electronic Portable Key Safe, Bluetooth iOS/Android App and Keypad Codes, 3-1/4 in. Wide

4.2 4.2 out of 5 stars 1,481 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Security Lock Boxes by Master Lock

To see product details, add this item to your cart. You can always remove it later.
FREE Returns
Portable
Box

Purchase options and add-ons


About this item

  • For indoor or outdoor use; portable lock box is best used for key and access card storage; large internal cavity allows secure storage for multiple keys; weather resistant to -40°. Schedule access now or in the future.
  • Share temporary or permanent access via Bluetooth or keypad code with invited guests (Wi-Fi connection is not required to operate); Monitor activity, and receive tamper and low-battery alerts
  • Ideal for use on Airbnb and VRBO vacation rental properties, unmanned remote locations, and real estate
  • Master Lock Vault Home and Enterprise Apps are designed for personal use, supporting up to 10 locks. Can be upgraded to Master Lock Vault Enterprise business platform, and integrated with ShowingTime and BrokerBay scheduling management
  • 3-1/4 in. wide lock body, 13/32 in. diameter shackle with 1-13/16 in. length, 1-13/32 in. width; Internal dimensions 3-39/64 in. height, 2-1/2 in. width, 1-7/64 in. depth; Replaceable CR123A battery (included); Lock box is not intended to securely fit key fobs inside
  • For answers to frequently asked questions, 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

Sturdiness
4.2 4.2
Durability
4.2 4.2
Easy to install
4.0 4.0
Easy to use
3.8 3.8

Frequently bought together

$154.00
Get it as soon as Sunday, Mar 31
In Stock
Ships from and sold by Amazon.com.
+
$9.44
Get it as soon as Sunday, Mar 31
In Stock
Ships from and sold by Amazon.com.
+
$37.79
Get it as soon as Sunday, Mar 31
In Stock
Ships from and sold by Amazon.com.
Total price:
To see our price, add these items to your cart.
Details
Added to Cart
Choose items to buy together.

Compare with similar items

This Item
Master Lock Lock Box, Electronic Portable Key Safe, Bluetooth iOS/Android App and Keypad Codes, 3-1/4 in. Wide
Master Lock Lock Box, Electronic Portable Key Safe, Bluetooth iOS/Android App and Keypad Codes, 3-1/4 in. Wide
Recommendations
Master Lock Portable Small Lock Box, Set Your Own Combination Lock Portable Safe, Personal Travel Safe
dummy
Master Lock 5420EC Set Your Own Combination Portable Lock Box with Adjustable Shackle, 6 Key Capacity Black
dummy
Key Lock Box for Outside - Realtor Lockbox for House Keys Outdoor - Combination Key Hiders to Hide a Key Safe Storage
dummy
Puroma Key Lock Box, Portable Combination Lockbox Wall-Mounted Key Storage Box for House Keys, Resettable Code Safe Security Lock Box for Home, Office, Apartment Spare Key Storage (1 Pack, Gray)
dummy
Master Lock 5425D Set Your Own Combination Wall Mount Lock Box with Light Up Dials, 6 Key Capacity
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Price-14% $154.00
List:$179.99
$23.98-11% $35.42
List:$39.99
-20% $27.99
List:$34.99
$11.99-21% $34.97
List:$43.99
Delivery
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Customer Ratings
Easy to use
3.8
4.0
4.4
4.6
4.2
4.3
Sturdiness
4.2
4.4
4.5
4.2
Easy to install
4.0
4.7
4.4
4.4
Weatherproof
4.4
4.5
4.2
4.6
Easy to lock
4.1
4.3
4.6
Sold By
Amazon.com
Amazon.com
Amazon.com
Rudy Run
PuromaDirect
Amazon.com
lock type
Electronic, Key
Combination
Combination Lock
Combination
Mechanical Code Lockbox
Combination Lock
material
Zinc
Multi
Metal, Plastic
Aluminum, Zinc, Stainless Steel
Aluminum Zinc Alloy, Steel
Metal
alarm
Lock
Audible
Lock
Lock
chamber depth
3.5
2.6
1
chamber height
4.8
1
7.5
1.4
2.99
4.19
chamber width
9.5 inches
1
2.6
38

From the manufacturer

5440D, portable, lock, box, key safe
Bluetooth Lock Box

Property Access Management

  • Free iOS and Android Master Lock Vault Home app for home and personal use, and Master Lock Vault Enterprise for business use
  • Convenient access without secondary key card
  • Large storage capacity for keys and key cards
  • Easy to replace, long-life CR123A battery (included)
  • Simple backup access using the keypad
  • Monitor access history
  • Secure and durable solid body with weather resistance to -40 degrees Fahrenheit
  • 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

Bluetooth lock box

Bluetooth key safe

Low battery alerts

Share Access

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

Monitor Activity

View lock history, including registration, guest addition/deletion, unlock/open/re-lock activity, tamper and low battery alerts.

Low Battery Alerts

Keypad warning light and app notifications.

Master Lock For Everything Worth Protecting

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.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Feedback

Master

Master Lock Lock Box, Electronic Portable Key Safe, Bluetooth iOS/Android App and Keypad Codes, 3-1/4 in. Wide


Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?

/
/
/
/
Please sign in to provide feedback.

Looking for specific info?

Product guides and documents

Product Description

The Master Lock 5440EC Bluetooth Portable Lock Box. Open and manage with your smartphone or with temporary or permanent codes. Monitor who visits and when through the App and notifications. Removable shackle can be managed with the App or a traditional code. Large capacity to hold key cards or traditional keys. Long life battery is easily replaceable. Solid body durability and coated surface to protect hardware and door finish. Works with the free Master Lock Vault App. Use the App or web to track usage

Customer reviews

4.2 out of 5 stars
4.2 out of 5
1,481 global ratings

Customers say

Customers like the sturdiness of the safe. However, they have mixed opinions on the quality, bluetooth connectivity, size, ease of setup, value, performance, and ease of use.

AI-generated from the text of customer reviews

58 customers mention53 positive5 negative

Customers are satisfied with the sturdiness of the safe. They mention that it is very sturdy, reliable, and feels as secure as one would expect. The internet connection is more stable, and the Bluetooth solution is quite solid. Overall, customers are happy with their purchase and recommend it to others.

"...It feels sturdy and I think it would keep whatever you put inside it safe...." Read more

"Heavy duty and keeps track of users. It is a jump in price, but other models can be broken (drilled) into so quickly and this not so...." Read more

"...Pros: It's solid and made to be outdoors, plenty of room for several keys or keycard, fairly affordable for a Bluetooth lock, nice solid keypad, and..." Read more

"This lockbox is sturdy and does exactly what the fine print says it does. What it doesn’t do is work through your Wi-Fi remotely...." Read more

136 customers mention65 positive71 negative

Customers are mixed about the quality of the lock box. Some mention that it's the best lockbox to purchase, while others say that it has connection errors and the lock won't open unless a secondary code is used. Some say that the shackle won' t go back in and the keys are locked in.

"Easy to use, online portal and app work great.Perfect for controlling remote access to keys." Read more

"...It completely did the opposite.1. Keys locked in and can't get out: For two months we haven't been able to get our keys out of the lock..." Read more

"...First impression is that this lock is big, the body is very durable and the way it is design is much stronger than other typical portable lock..." Read more

"...I called Masterlock again and they said it might be Very Very difficult to pull the shackle even if it was unlocked...." Read more

135 customers mention71 positive64 negative

Customers are mixed about the performance of the lockbox. Some mention that it works well, is easy to use, and perfect for controlling remote access to keys. However, others say that it's very difficult to work on the lock box while it'd be contained in the safe. Some say that the software is not very functional, and the codes that their partner programmed don't work.

"...It has lots of customization options and works better than I expected...." Read more

"...Our keys are still locked in the box. Our code isn't working. The codes that my partner programmed aren't working. The box isn't opening...." Read more

"Easy to use, online portal and app work great.Perfect for controlling remote access to keys." Read more

"...It is very difficult to try to work on the lockbox while it is contained in the packaging and it has a 5 second default timeout on combination..." Read more

92 customers mention58 positive34 negative

Customers are mixed about the ease of setup. Some mention that they are super easy to use and integrate with ShowingTime, while others say that it's too complicated for occasional users, the directions are poor and basic at best, and the lock can be finicky as heck.

"Easy to use, online portal and app work great.Perfect for controlling remote access to keys." Read more

"...The directions are poor and basic at best and barely helped you through the install process...." Read more

"...2. The description makes it look easy to program the lock box and give a code to guests or whomever you want to let enter your house...." Read more

"I’m a real estate agent and I love these lockboxes. They are super easy to use and I love that they integrate with ShowingTime eliminating the..." Read more

42 customers mention27 positive15 negative

Customers are mixed about the ease of use of the safe. Some mention they like the ability to give different codes to various individuals, and easily provide a temporary code to give access. They also say the light up touch numbers are easy to use and the app can program multiple codes. However, others say it's difficult to issue access codes to people, and the phone doesn't send the access code. They report issues with the app and the lack of a settable key code or time limit.

"...The lighted keypad is a easy to see; the buttons are big and sound a tone and blink when you push them; and the ability to create long or short PINs..." Read more

"...at this rate, I'm almost leaning towards returning it as not having a settable key code or time limit, even a sharable Bluetooth option is very..." Read more

"...concrete wall next to the mailbox, texted with a cell phone app, opened right up, sent email code and text code...." Read more

"...It keeps track of 5 different codes and when used...." Read more

42 customers mention16 positive26 negative

Customers have mixed opinions about the value of the Bluetooth lock. Some find it well worth the price, an investment, and affordable for a Bluetooth lock, while others say it's a waste of money and disappointing.

"...Absolutely worthless. Waste of money. DO NOT BUY.Master Lock or Amazon, if you are reading this I want my money and my keys back!" Read more

"...The lighted keypad makes this lock box worth the investment!..." Read more

"Heavy duty and keeps track of users. It is a jump in price, but other models can be broken (drilled) into so quickly and this not so...." Read more

"...So a big waste of money. I’m looking for another option that will work for us." Read more

33 customers mention19 positive14 negative

Customers are mixed about the size of the safe. Some mention that there is ample space for the key(s), the box is very large to hold keys, and has extra room in the box compared to the mechanical Master Lock box. However, others say that it's not big enough for most key fobs, takes up all of the screen space on their phone, and that some keyfobs could not fit in it.

"...It can allow for several (I think up to 5 or 7) different access codes that can be personalized and assigned to different people allowing each..." Read more

"...My biggest concern with the lock is the storage area is stupidly TO SMALL!..." Read more

"...room for several keys." Read more

"...on the bottom of the door, so when you close the box it leaves little space for objects, and then they have to be flat or able to bend...." Read more

21 customers mention9 positive12 negative

Customers are mixed about the bluetooth connectivity of the safe. Some mention that it has Bluetooth connectivity that allows it to be programmed from the phone, while others say that it's mostly useless and does not work unless you're standing directly in front of it.

"...not having a settable key code or time limit, even a sharable Bluetooth option is very limiting." Read more

"...It is heavy and has Bluetooth connectivity that allows it to be programmed from the Master Lock app...." Read more

"...It only works with Bluetooth while you were on the property, to change codes and lock and unlock from the property...." Read more

"...Installed on a concrete wall next to the mailbox, texted with a cell phone app, opened right up, sent email code and text code...." Read more

Convenient Home Seller Must Have
5 Stars
Convenient Home Seller Must Have
Selling a house, this will save me trips to meet the agent. Installed on a concrete wall next to the mailbox, texted with a cell phone app, opened right up, sent email code and text code. enter the code opens right up, place the cell phone by the lock box with the app open and the lock box opens. has a battery which they say will last two years. if by chance the battery goes bad, you can place a D-cell battery on the two connections on the bottom of the lockbox and use your cell phone or code to open with D-cell power I think that is a nice feature. room for several keys.
Thank you for your feedback
Sorry, there was an error
Sorry we couldn't load the review

Top reviews from the United States

Reviewed in the United States on April 13, 2021
Style: Wall MountPattern Name: BoxVerified Purchase
36 people found this helpful
Report
Reviewed in the United States on January 30, 2024
Style: PortablePattern Name: BoxVerified Purchase
Reviewed in the United States on February 17, 2024
Style: Wall MountPattern Name: BoxVerified Purchase
Customer image
Sam
5.0 out of 5 stars Convenient Home Seller Must Have
Reviewed in the United States on February 17, 2024
Selling a house, this will save me trips to meet the agent. Installed on a concrete wall next to the mailbox, texted with a cell phone app, opened right up, sent email code and text code. enter the code opens right up, place the cell phone by the lock box with the app open and the lock box opens. has a battery which they say will last two years. if by chance the battery goes bad, you can place a D-cell battery on the two connections on the bottom of the lockbox and use your cell phone or code to open with D-cell power I think that is a nice feature. room for several keys.
Images in this review
Customer image
Customer image
Reviewed in the United States on March 30, 2019
Style: PortablePattern Name: BoxVerified Purchase
70 people found this helpful
Report

Top reviews from other countries

Translate all reviews to English
JS
5.0 out of 5 stars Easy to use once you figure out the ins and outs
Reviewed in Canada on October 23, 2023
Style: Wall MountPattern Name: BoxVerified Purchase
One person found this helpful
Report
Mr Justin Cowell
5.0 out of 5 stars Solid build and smart software
Reviewed in Australia on July 30, 2021
Style: Wall MountPattern Name: BoxVerified Purchase
John
5.0 out of 5 stars Going strong after 2 years!
Reviewed in Canada on November 3, 2023
Style: Wall MountPattern Name: BoxVerified Purchase
2 people found this helpful
Report
Raul Fernando
5.0 out of 5 stars Excelente producto, pero le cambian constantemente de precio
Reviewed in Mexico on July 14, 2020
Style: Wall MountPattern Name: BoxVerified Purchase
Amazon Customer
1.0 out of 5 stars No room inside for anything but a key.
Reviewed in Australia on April 8, 2021
Style: Wall MountPattern Name: BoxVerified Purchase
One person found this helpful
Report