The 3D recognition door lock has multiple unlocking modes including recognition, fingerprint, password, magnetic card and mechanical key. The fingerprint lock is equipped with a built-in biometric fingerprint sensor to prevent any illegal fingerprint unlocking. It can unlock and recognize in 0.5 seconds. Password supports virtual password, you can add any number before or after the correct password to prevent strangers from peeping. The IC card lock uses a 13.56MHz magnetic card for unlocking, and can add up to 100 magnetic card unlocking . Hign-concerned Chemical:None Power Supply:Built-in Rechargeable Battery Handle Direction:Direction Reversible Fit Door Thickness:40-120mm Suitable Door Type:Wooden Door,Steel Door,Brass Door,Stainless Door Special Features:Built-in Doorbell,Built-in Camera,Bulit-in Peephole,Bulit-in Screen Type:Oil Rubbed Doorknob Funcition:Biometric,Key & Keypad Connectivity:WIFI Ways To Unlock:Card,FINGERPRINT,Mechanical The product appearance and printed words depending on the batch, but this does not affect use. Colour:As Shown Material:ABS Package Contents: 1 * Electronic Lock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.