Keyless Smart Electronic Entry Door Lock Keypad DeadboltKEYLESS ENTRY: 1000 user codes, FOB and phone App entry methods, with 2 spare keys SECURITY DEADBOLT: Features a ANSI Grade 3 door lock with sturdy alloy cylinder, powered by 4 AA batteries that would last over a year. IP54 waterproof. SMART DOOR LOCK: Manage user codes, register FOB cards, view entry logs on cell phone. Low battery message alert, with a USB C port for powering up the lock with a power bank or labtop in case batteries are completely

GENUINE GOLDSTONE KNOBS - These knobs are made from genuine Blue Goldstone

SMART DOOR LOCK: Manage user codes

It is safe to use around pets and children

4MHz instant atomization technology

1 set screw

SMART DOOR LOCK: Manage user codes and view entry logs on cell phone

The noise level is lower than 22 dB

SECURITY DEADBOLT: Features a ANSI Grade 3 door lock with sturdy alloy cylinder

GENUINE CRYSTAL DOOR KNOBS - These crystals are made from real high quality crystals

SATISFACTION GUARANTEE: Comes with 30-day money back guarantee

HIGH QUALITY ALLOY LATCH (*PRIVACY & PASSAGE only) - Comes with a standard 2-3/8" latch

at low mist mode it could last 18 hours (12 for high mist)