Me gustó y perfecto para mi puerta exterior, lo recomiendo

Good quality well made functional

This was a very quick install, about 5 minutes, AFTER I obtained the 9/16 inch drill bit that is needed. This not a usual size drill bit included in most sets.It would be most helpful if, within the description of the product, the need for a 9/16 inch drill were mentioned. This would make a good product a great and easy installation.

It does what it's supposed to do - allow me to see what's on the other side of the door. Image is not as clear as I'd like, but it's better than what I had.

This was as easy to install as I expected, and the clarity is great.