This Master Lock Smart Bluetooth Key Box (5441EURD) is the perfect solution for keeping your valuables safe and secure. Made of durable metal and designed with a black finish, this key safe is large enough to store multiple keys and is suitable for any surface mounting. The lock mechanism is key-based and the security rating is A. With portable and adjustable shelves, this key safe is not only practical but also stylish. The Master Lock SMART 5441EURD model comes with a keyless entry convenience and is perfect for use at home or in a office. Whether you need to store keys, a safe or other valuables, this Master Lock key safe is the ideal choice.