Customer reviews on the Yale Doorman Classic Smart Door Lock are largely positive, with many praising it as a significant improvement over traditional door locks and a modern upgrade. One reviewer described the installation process as requiring some modification to fit their 70s-era door. However, a negative aspect mentioned by another reviewer is the noticeable mechanical noise produced during operation. Overall, the product receives positive feedback for its functionality and modern design, but potential buyers should be aware of the possible need for adjustments during installation and the presence of some mechanical noise.

• Great product
• Modern upgrade
• Loud mechanism
• Requires modification