Smart Lock Digital Password Door Lock – Keyless Entry Door Lock With 100 Custom User Codes, 3‑In‑1 Unlock Keypad Deadbolt, Electronic Door Lock

[Secure & Flexible Passcode Access]Featuring a 6‑digit passcode design for enhanced protection, this fully keyless entry smart deadbolt supports up to 100 customizable user codes, covering permanent, temporary, and single‑use passwords. You can assign exclusive access permissions to family members, visiting guests, and service staff such as housekeepers and delivery personnel without sharing your primary access key. Every single‑use code automatically becomes invalid right after one‑time usage, effectively boosting overall household defence. It is a perfect keyless access solution for regular cleaning services, parcel delivery, and short‑term temporary entry scenarios.[ANSI Grade 3 Certified High‑Security Deadbolt]Adopting local data storage design, this lock requires no network connection, no dedicated programs and no recurring fees, eliminating external invasion risks and delivering comprehensive household defence. Made of sturdy zinc alloy material and equipped with a reinforced lock cylinder, it boasts an IP53 waterproof rating and fully complies with ANSI Grade 3 security standards. The robust structure resists rain, dust and extreme temperature changes, making it suitable for installation on front entry doors, bedroom doors and various indoor and outdoor door bodies.[Smart Auto‑Lock Function]Equipped with a customizable auto‑lock function, the door can be automatically locked within 1 to 9 seconds after unlocking as you set. You can also long press the "*" key to realize instant manual locking whenever needed. This practical keyless deadbolt provides an all‑time reliable and convenient access solution, perfectly fitting the usage needs of apartments, rental houses, garages and busy families.[Quick & Easy DIY Installation]You can finish the whole installation and upgrade your household defence system in minutes only with a screwdriver. This smart lock fits standard American‑style doors, compatible with door thickness from 1‑3/8 inches to 2 inches, 55mm door holes, and adjustable backset of 2‑3/8 inches or 2‑3/4 inches. It works for both left‑opening and right‑opening doors (installation video available in product details), enabling effortless self‑installation and replacement of traditional keypad door locks.[Type‑C Emergency Power Supply & Long Battery Life]This high‑performance electronic door lock is equipped with 4 AA batteries in the package, supporting up to 12 months of long‑lasting use, with intelligent low‑power reminder function. In case of battery exhaustion, you can connect any portable power bank to the built‑in Type‑C emergency power port to activate unlocking. This keeps the lock functional for urgent access when battery power runs low.Zinc Alloy