Arpha Smart Door Lock D100 Smart Keyless Electronic Door Lock with 100 User Codes Auto-Lock Anti-Peeping Passwords Easy Install

Arpha Keyless Entry Door Lock  Electronic Keypad Deadbolt Lock with 100 Codes - Smart Door Locks for Front Door - 16 Anti-Peeking Passwords Zinc Alloy AUTO LOCK The smart lock locks the door within 10-30 seconds after the password is entered. No need to worry about forgetting to lock the door. Low Battery Alert The smart lock supports Type-C temporary emergency power supply port. 4 AA batteries can provide 10,000 openings (approx. 8 months). Anti-Peeping Password Arpha smart keypad deadbolt provides 16 digits virtual code unlocking function. You could enter 4~8 fixed password + 12~8 You could enter 4~8 fixed password + 12~8 virtual password to unlock. Easy Installation This smart deadbolt can be easily installed with a screwdriver in minutes. Security home electronic door lock features a universal design, fit for left and right door directions. Deadbolt lock fit door thicknesses from 1-3/8" to 2-1/8" (35mm - 55mm), backset 2-3/8" (60mm) and 2-1/8" (70mm). SPECIFICATIONS 1: smart door l