Can you set it to lock automatically every time you close the door?

I don't think so, you have to lock it by hand and then close the door, I could be wrong though

what size door will it fit

The box say it fits doors 35 mm (1-3/8" ) to 45mm (1-3/4 ") thick. Adjustable latch fits 2-3/8" or 2-3/4" backset.

Is it possible to change the inside door button (so that it is vertical when door is unlocked, thus matching US standards/other locks in my home? Rig

It can be install either way u can also if lock u can use a screwdriver or knife to unlock no key is needed

Does it has a push button lock in the other side?

It is not a push button, it has a lever that you turn to lock the door.

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Description

🔑 Unlock style and security with Copper Creek’s antique brass charm!

TIMELESS ELEGANCE - Rich antique brass finish resists smudges and adds warm sophistication.
INSTALL LIKE A PRO - Includes screw alignment adapters and clear instructions for quick setup.
PEACE OF MIND GUARANTEED - Backed by a limited lifetime mechanical warranty and 10-year finish warranty.
EFFORTLESS FIT SEAMLESS STYLE - Round corner adjustable latch fits most doors with precision.
BUILT TO LAST DESIGNED TO IMPRESS - ANSI Grade-3 certified for top-tier security and durability.

The Copper Creek BK2020AB Ball Door Knob combines ANSI Grade-3 security with a stylish antique brass finish, featuring a round corner adjustable latch for easy installation on most doors. Designed for indoor residential use, it offers durability, smudge resistance, and comes with a limited lifetime mechanical warranty plus a 10-year finish warranty, making it the perfect upgrade for modern home interiors.

Specifications

Material	Metal, steel, brass, zinc, etc
Brand	Copper Creek
Color	Antique Brass
Product Dimensions	7.4"L x 3.5"W
Exterior Finish	Brass
Specific Uses For Product	Bathroom door, Bedroom door
Special Feature	Easy to Install, Sturdy
Included Components	Hardware and Instructions
Lock Type	Key Lock
Theme	Home Improvement, Interior Design
Item Weight	15.52 ounces
Center To Center Spacing	3 Inches
Metal Type	Alloy Steel, Brass, Copper
Handle Material	Copper
Hand Orientation	Ambidextrous
Customer Package Type	Box Pack
Unit Count	1.0 Count
Number of Items	1
Manufacturer	Copper Creek Hardware
Global Trade Identification Number	00878898000613
Handle Attachment Mechanism	Latch
UPC	878898000613
Room Type	Indoor Residential
Indoor/Outdoor Usage	Indoor
Part Number	BK2020AB
Item Weight	15.5 ounces
Item model number	BK2020AB
Size	1 Pack
Finish	Antique Brass
Pattern	Passage
Item Package Quantity	1
Number Of Pieces	1
Special Features	Easy to Install, Sturdy
Batteries Required?	No
Warranty Description	limited lifetime mechanical warranty and 10 year finish warranty.

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