The Master Lock® No. 5440EC Bluetooth® Portable Lock Box features a 3-1/4″ (83mm) wide metal body for durability and a fully removable shackle for convenience. The Master Lock Vault Enterprise system is designed to supportMany Locks and Many Userswith unmatched security, simplicity and accountability. Administrators control individual or system-wide lock access with our convenient web interface, while users enjoy simple, secure access to assigned locks or lock boxes.








