User installation manual helps you better create or delete access codes; light colors indicate different working conditions; can be set freely; provide more convenience for your life. All operations are done on the keyboard; can set the door delay time; change the password; changed the way the door is opened; convenient and practical. Smart access control with large capacity; support 2000 users; 3 ways of access: card; code; card + code; provide more convenience for family or trusted friends. Zinc alloy metal buttons; internal potting; allowing long-term use in rain and sunlight; soft keyboard backlight design; easy to find and enter the password correctly even at night; useful. Sturdy appearance hard to destroy; no need to worry about forgetting to key or losing the key; just enter the password or card to open the door; wire is cut; door will be locked.