Multi-functional child-proof lock, made of durable plastic material, in white color. It can be used for childproof closing of double doors, to protect young children from injury during play. It can be easily placed and removed, using one of the two methods of installation with screw or with adhesive tape, without leaving marks on the surfaces where it is glued. This product has been tested according to EN 16948: 2017 child safety standards and has been approved for child safety during use.