VEVOR Double Door Handle Set, Matte Black Square Door Lever, Double Front Door Handle Set with Reversible Handle Lever, Heavy Duty Double Door Lock Set with Dummy, for Office Door or Front Door

No, these locks cannot be re-keyed.

According to the product description, it is easy to install and operate. The adjustable design with variable hole spacing and latch positions simplifies the installation process.

Based on the product information, it does not mention compatibility with smart home systems.

I did not find any information about compatibility with smart home systems in the product description or customer reviews.

The product description doesn't mention anything about scratch resistance. However, it states that the door handle set is made of zinc alloy which provides a superior texture and high tensile strength.

The product description states that it is easy to install and operate, requiring only one screw for replacement. It also mentions that the adjustable design with variable hole spacing and latch positions makes installation convenient.