Hidalife Smart Door Knob with Keypad, Keyless Entry Door Lock for Front Door, Easy Passage Mode, One-time Code, Satin Nickel

Smart Intruder Defense Enter random digits before/after your 4-digit code to to avoid prying, protects against code guessing in high-traffic homes/offices. | Easy Auto-Lock/Unlock SwitchKeep the door unlocked without programming. Convenient for deliveries, kids' playtime,or moving days.Perfect for front door. | Smart Auto-Lock CustomizationSet 2-99 second auto-locking. Perfect for forgetful families/tenants at main entries. | Keyless EntryManage access with 20 usercodes - perfect for homeowners & Airbnb hosts. Assign permanent codes to family/tenants and generate temporary codes for deliveries/cleaners. | User-Friendly KeypadBacklit keypad illuminates dark entries. Silent mode ensures quiet entry for late - night arrivals or shared homes. | Universal FitOur Digital Lock Fits standard doors (2-1/8" hole, 2-3/8"/2-7/8" backset, 1-3/8"-2" door thickness). Note: not compatible with 1-1/2" door holes. Easy to install. | Advanced DurabilityHeavy-duty zinc alloy built to endure 250,000+ cycles test (ANSI Grade 3). 13+ month 9V battery life with low-power alerts. Battery not included.