Ardwolf A1 Fingerprint Door Lock, Keyless Biometric Keypad Lock, with Reversible Lever and Automatic Locking, No Drills Needed – Satin Nickel

Five ways to unlock
You can use the added fingerprint or the user code to unlock the door, or else use the mechanical key. For more safe, there is a double verification mode, you can enter any code + any fingerprint, or any two different added fingerprint to unlock the door.

Passage mode Support
To enable a passage mode, press # within 5 seconds after any user unlocks the lock by using either a fingerprint or a user code. Then the door will keep unlock, any one could open the door.
Disable the passage mode: by entering any fingerprint or a user code to end this mode.

Add or delete fingerprint and user code
This lock can be added up to 100 fingerprint users and 100 user codes into the system. And you can also delete any individual fingerprint or the user code as you want. Also you can delete all of them.

Additional features
Optical sensor.
ADA Compliant, Standard 12-key keypad.
Deadlocking latch-bolts.
Adjustable backset 2-3/8″ or 2-3/4″.
Fit door thickness between 1-3/8″ and 2-3/8″.
Fit dimension 2-1/8″ hole, no need to drill extra hole.
Operation temperature from -4 degrees F to 150 degrees F (-20 degrees to 65 degrees).
Powered by 4 AA Alkaline batteries (NOT included).
Lock designed for INTERIOR door only.
Finish : Satin Nickel.