The Master Lock No. 5440EC Bluetooth® Portable Lock Box features a 3-1/4″ (83mm) wide metal body for durability & a fully removable shackle for convenience. Secure your home or business with the Master Lock Vault System for unmatched security, simplicity and accountability using the latest technology from Master Lock.
Use your smartphone to open and manage your lock with the Master Lock® Vault System compatible with both Master Lock Vault Home and Master Lock Vault Enterprise
The free Master Lock Vault Home iOS and Android apps are designed for personal use, supporting up to 10 locks, and allows you to monitor access history
The free Master Lock Vault Enterprise iOS and Android app and web interface are designed for business applications working with many locks and many users allowing you to easily monitor access with robust data and audit trails
No keys to lose, no combinations to forget. No unauthorized key duplication.
Backup access using numeric code on lock keypad
Share access with others – temporary or permanent
Removable shackle for easy portability and installation
Low battery notification & reminder on lock box and in app
Comes with easy to replace CR123A battery
Large storage capacity for keys and access cards
Amanda White –
Very solid lock box with plenty of space for a couple keys and a fob. Sharing access through the app is very handy.
George King –
Feels secure and the removable shackle makes it easy to move between properties. Great replacement for old combo boxes.
Store Manager –
Appreciate the review! Great call using temporary codes for contractors—happy to hear the lock box has been a solid upgrade.