Locking and Unlocking: Specially designed locking and unlocking methods. Three buttons allow two-handed locking, while unlocking is easily done with one hand (two fingers). Simple and easy for adults to use, but difficult for children to manipulate. Its discreet and discreet design blends perfectly with your room decor. Easy Installation: The lock is installed directly by peeling off the adhesive tape and installing the lever lock on the door, without drilling or tools. The adhesive tape is highly adhesive (optimal effectiveness after 24 hours) and can be easily removed without leaving any traces, without damaging the door. Wide Range of Uses: Suitable for most door handles on the market, it offers many applications thanks to its practicality and smaller size compared to similar locks. Why? No more children and pets locking you in the room; Prevent children from entering certain rooms, such as bathrooms or storage rooms, without adult supervision; Prevent children from playing with the door and pinching their fingers. Tips --- Please keep the safety lock unlocked at all times, ensuring that the arm cannot push up or down in the "locked" and "unlocked" positions.