No Drilling, indoor installation,concealed installation and no marks outdoors Outdoor card swiping unlocking, mobile app unlocking. Indoor one click unlocking, manual knob unlocking The door automatically locks when closed APP version unlock record monitoring: IC card and APP unlock records are . After operating the lock on any mobile app, connecting to , and synchronizing information, all unlock records can be seen on the administrator app Name:Indoor intelligent Wood door lock Suitable for:only Wooden doors Style:Magnetic lock Unlocking method: outdoor IC card unlocking, indoor button unlocking, TTLOCK APP unlocking Closing the lock: The closing principle of a magnetic lock relies on magnetic . Only when the lock tongue and lock buckle are facing each other the lock tongue be attracted by the magnetic force, thus closing the lock IC card sensing distance: 50mm Lock buckle: The height of the lock buckle can be adjusted by 21-25mm Applicable to door thickness:Less than 60mm Color:As Shown Material:ABS Package Contents: 1 * Punch-Free Smart 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.