[Keyless Entry & Ergonomic Design] This keypad door knob lock allows you to program up to 50 user access codes and 1 master code.the code in length can be 4 to 15 digit,easily programmed at the backlit keypad in seconds. An idealistic simplified look brings trendy style to the exterior & interior doors of your office, home and rental property,etc. [Enhanced Security & Durable] This electronics keypad lock has the strength and durability optimized for commercial applications.Heavy-duty and contemporary design,premium metal construction and solid lock cylinder,easy-to-grasp handle.IP65 weatherproof,works great in any weather.Ideal for your entrance doors,front door entry,garage,utility room doors,side, backdoors,bedrooms. [Multi-functions & Smart] Auto-locks behind you for peace of mind.Password disguise.Silent mode.Depending on your needs,you can enable Passage Mode.Backlit keypad will lit when pushing any button.Low battery warning,and you can use type-c usb backup (cable not