Why you need it: Are you concerned that your child might accidentally lock themselves in a room while playing? Do you worry about the risks of leaving doors unlocked when you're unable to supervise your child or pet? With our childproof door lock cover, you can install a rotating back-lock deadbolt and avoid concerns about children accidentally operating the deadbolt. Keep your child safe and gain peace of mind.Hidden switch design, difficult for children to open: This childproof door knob cover requires fingers to press the button inward and then slide upward to unlock, making it easy for adults to operateone-handed operation is possible even while holding a child or carrying items. However, the mechanism is difficult for young children to understand, effectively preventing them from locking themselves inside a room and becoming frightened when no one can enter quickly.Simple installation: No drilling or tools required. The deadbolt cover features a non-marking adhesive backing that can withstand 1520 pounds of pulling force, ensuring that your child cannot remove or open the cover.Environmentally friendly and durable: Made from safe, non-toxic materials designed for long-term use.Strong applicability: Includes four protective covers that fit most standard door deadbolts. Ideal for use on multiple interior doors throughout your home. Please measure your deadbolt before purchasing to ensure compatibility.Material: Plastic Color: Black Package Contents: 4 x Lock Covers Note: Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement may vary by 13 cm.