If you’re always at a loss as to where a spare set of keys can be safely left outside your house, then Master Lock has a high-tech, ultra-safe answer for you with its Bluetooth key box. It’s a safe ...

The Master Lock No. 5440EC Bluetooth Portable Lock Box can be used to keep keys, access cards and small items secure on the jobsite. With digital access, the 5440EC minimizes the possibility of ...

If you purchase an independently reviewed product or service through a link on our website, Rolling Stone may receive an affiliate commission. When you need to safely store keys, cards, and other ...