---
product_id: 44772719
title: "Master Lock Key Lock Box with Code, Outdoor Lock Box for Realtors, Property Managers and Landlords, Ideal for Short-Term Rentals, Key Safe Holds 5 Keys, 5440EC"
brand: "master lock"
price: "AED 399"
currency: AED
in_stock: true
reviews_count: 10
category: "Master Lock"
url: https://www.desertcart.ae/products/44772719-master-lock-key-lock-box-with-code-outdoor-lock-box
store_origin: AE
region: United Arab Emirates
---

# App monitoring & alerts Bluetooth & keypad access Weather resistant to -40° Master Lock Key Lock Box with Code, Outdoor Lock Box for Realtors, Property Managers and Landlords, Ideal for Short-Term Rentals, Key Safe Holds 5 Keys, 5440EC

**Brand:** master lock
**Price:** AED 399
**Availability:** ✅ In Stock

## Summary

> 🔐 Unlock smarter security—because your keys deserve a VIP lounge.

## Quick Answers

- **What is this?** Master Lock Key Lock Box with Code, Outdoor Lock Box for Realtors, Property Managers and Landlords, Ideal for Short-Term Rentals, Key Safe Holds 5 Keys, 5440EC by master lock
- **How much does it cost?** AED 399 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/44772719-master-lock-key-lock-box-with-code-outdoor-lock-box)

## Best For

- master lock enthusiasts

## Why This Product

- Trusted master lock brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Access Control:** Grant temporary or permanent entry via Bluetooth or keypad codes—no Wi-Fi needed.
- • **Spacious Key Storage:** Generous internal cavity holds up to 5 keys or key cards, perfect for property managers and landlords.
- • **Seamless App Integration:** Manage up to 10 locks with Master Lock Vault Home app or upgrade to Enterprise for advanced scheduling and integrations.
- • **Rugged Weatherproof Design:** Built to withstand extreme outdoor conditions down to -40°, ensuring reliable security year-round.
- • **Real-Time Activity Monitoring:** Track access logs and receive tamper and low-battery alerts directly on your smartphone.

## Overview

The Master Lock 5440EC is a durable, weather-resistant Bluetooth-enabled lock box designed for secure key storage and smart access management. Ideal for realtors, property managers, and short-term rental hosts, it supports app-based control, real-time monitoring, and multiple user codes without requiring Wi-Fi. Its robust metal construction and replaceable battery ensure long-lasting outdoor use, while the spacious interior accommodates up to 5 keys or cards.

## 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

Review: Great experience - Great product, very sturdy and safe, the app takes a bit of time to understand, but my wife is smarter than me, so no problem! Super convenient not to have to key codes, works really well. Thank you.
Review: Good Box that Seems to Work Well - I bought this key safe box for my 91 yo father who has lost his house keys twice in the last 2 months. I figured that putting a key in the box outside his door was the best way to ensure that he'd never lock himself out. From the moment I received the box, I was impressed with it. It is heavy and has Bluetooth connectivity that allows it to be programmed from the Master Lock app. Plus you can download access logs to see exactly who and when used 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 person their own code and the ability to use their own phone to unlock the box via Bluetooth. It has lots of customization options and works better than I expected. 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 is a plus. It feels sturdy and I think it would keep whatever you put inside it safe. I do have a couple constructive comments though... First, to open it, you have to grab it from both sides and pull on the flared edges of the door which folds down to open it. Though not a big deal, this would seem kind hard for someone with grip issues. I assume it's built like this so you can't easily take a pry bar to the key safe, which I understand, but it also makes it a little harder to use for people with disabilities or the elderly... Or if it got wet, it might just be a little hard to open for a regular person if it got slippery. Maybe if the door popped open slightly when disarmed, that would be helpful and make opening the door a little easier. Lastly, I have more of an installation tip than a criticism... maybe a criticism of the directions. When you install the Master Lock app and assign phone privileges to the app, make sure that you set the privileges for the app to access your phone's Bluetooth all of the time, not just when the app is running. I know this sounds strange, but I had all sorts of connectivity issues with the app communicating with the box when the app only had privileges when the app was on. The app would recognize the box but it wouldn't update it consistently with the new passcodes. It would download the access log, but I sometimes had a problem unlocking the box using the app. The app would see the key safe, but didn't seem to stay connected to it. The BT connectivity was very shoddy until I changed the apps privileges. Once I did that, the app recognized the box consistently and worked as designed. Unfortunately, I don't remember seeing anything in the directions about this tidbit, and there's no troubleshooting section in the included fold out directions to help you. The directions are poor and basic at best and barely helped you through the install process. Maybe if I had known how to set the app's permissions from the directions, my comments would be different, but unfortunately, that tidbit of info isn't there and so it tainted my experience until I figured it out. It was so bad I even considered returning the key safe as defective. Luckily I installed the app on my Android phone and noticed the "allow use all the time" privilege that I didn't see as a choice so I didn't select it the first time I installed the app on my Dad's Android phone. (My Dad has a Motorola phone, and I have a Samsung). Once I went into the app's privileges and fixed it, all the issues I had went away. Needless to say, it's working now and I think it'll provide the security that my Dad needs.

## Features

- 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
- Comes with easy to replace CR123A battery

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071VGZ283 |
| Additional Features | Portable |
| Best Sellers Rank | #12,082 in Office Products ( See Top 100 in Office Products ) #37 in Security Lock Boxes |
| Brand Name | Master Lock |
| Color | Silver & Black |
| Connectivity Protocol | Bluetooth, Wi-Fi |
| Control Method | App |
| Controller Type | Vera |
| Customer Reviews | 4.2 4.2 out of 5 stars (1,598) |
| Finish Types | Metal |
| Global Trade Identification Number | 00071649293009 |
| Included Components | Lock box |
| Item Dimensions | 1.13 x 3.25 x 4.8 inches |
| Item Type Name | Electronic Portable Lock Box with Personal use Software Platform |
| Item Weight | 0.5 Kilograms |
| Lock Type | Electronic |
| Manufacturer | Master Lock |
| Manufacturer Warranty Description | Limited One Year Warranty |
| Material Type | Metal |
| Model Number | 5440D |
| Recommended Uses For Product | Vacation rental properties, unmanned remote locations, real estate, and business applications with multiple locks and users |
| Shape | rectangular prism |
| Style Name | Portable |
| UPC | 071649293009 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Master Lock
- **Item dimensions L x W x H:** 1.13 x 3.25 x 4.8 inches
- **Lock Type:** Electronic
- **Material:** Metal
- **Special Feature:** Portable

## Images

![Master Lock Key Lock Box with Code, Outdoor Lock Box for Realtors, Property Managers and Landlords, Ideal for Short-Term Rentals, Key Safe Holds 5 Keys, 5440EC - Image 1](https://m.media-amazon.com/images/I/51O7QzFcuaL.jpg)

## Available Options

This product comes in different **Pattern, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great experience
*by O***E on November 20, 2025*

Great product, very sturdy and safe, the app takes a bit of time to understand, but my wife is smarter than me, so no problem! Super convenient not to have to key codes, works really well. Thank you.

### ⭐⭐⭐⭐⭐ Good Box that Seems to Work Well
*by E***E on April 13, 2021*

I bought this key safe box for my 91 yo father who has lost his house keys twice in the last 2 months. I figured that putting a key in the box outside his door was the best way to ensure that he'd never lock himself out. From the moment I received the box, I was impressed with it. It is heavy and has Bluetooth connectivity that allows it to be programmed from the Master Lock app. Plus you can download access logs to see exactly who and when used 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 person their own code and the ability to use their own phone to unlock the box via Bluetooth. It has lots of customization options and works better than I expected. 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 is a plus. It feels sturdy and I think it would keep whatever you put inside it safe. I do have a couple constructive comments though... First, to open it, you have to grab it from both sides and pull on the flared edges of the door which folds down to open it. Though not a big deal, this would seem kind hard for someone with grip issues. I assume it's built like this so you can't easily take a pry bar to the key safe, which I understand, but it also makes it a little harder to use for people with disabilities or the elderly... Or if it got wet, it might just be a little hard to open for a regular person if it got slippery. Maybe if the door popped open slightly when disarmed, that would be helpful and make opening the door a little easier. Lastly, I have more of an installation tip than a criticism... maybe a criticism of the directions. When you install the Master Lock app and assign phone privileges to the app, make sure that you set the privileges for the app to access your phone's Bluetooth all of the time, not just when the app is running. I know this sounds strange, but I had all sorts of connectivity issues with the app communicating with the box when the app only had privileges when the app was on. The app would recognize the box but it wouldn't update it consistently with the new passcodes. It would download the access log, but I sometimes had a problem unlocking the box using the app. The app would see the key safe, but didn't seem to stay connected to it. The BT connectivity was very shoddy until I changed the apps privileges. Once I did that, the app recognized the box consistently and worked as designed. Unfortunately, I don't remember seeing anything in the directions about this tidbit, and there's no troubleshooting section in the included fold out directions to help you. The directions are poor and basic at best and barely helped you through the install process. Maybe if I had known how to set the app's permissions from the directions, my comments would be different, but unfortunately, that tidbit of info isn't there and so it tainted my experience until I figured it out. It was so bad I even considered returning the key safe as defective. Luckily I installed the app on my Android phone and noticed the "allow use all the time" privilege that I didn't see as a choice so I didn't select it the first time I installed the app on my Dad's Android phone. (My Dad has a Motorola phone, and I have a Samsung). Once I went into the app's privileges and fixed it, all the issues I had went away. Needless to say, it's working now and I think it'll provide the security that my Dad needs.

### ⭐⭐⭐⭐⭐ Works Flawlessly!
*by A***Y on February 18, 2026*

We use this to hand out a key to a gated cave. Has worked flawlessly for 6 months on a single battery. Would highly recommend this product to someone who effectively needs to send out unique lockbox codes but does not have wifi available. Essentially the codes "exist" on this device always. The app on your phone just tells you what the code is for any given day/time. I believe the code is valid for 4 hour blocks of time. Very clever design.

## Frequently Bought Together

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*Product available on Desertcart United Arab Emirates*
*Store origin: AE*
*Last updated: 2026-05-02*