Ensure Child Safety: The childproof window lock is designed to restrict the opening distance of windows and doors to help reduce the risk of injury from falls. It allows fresh air to flow while providing added security. Choose Aosite child safety window locks for peace of mind and a safer home environment.More Convenient: The upgraded window safety restrictor measures 7.5 x 3.2 cm, making it suitable for the width of most windows. It can be used on wooden, PVC, and aluminum hinged windows, casement windows, and sliding windows. Compared to traditional screw window locks, the larger back plate provides sufficient surface area for strong adhesive bonding and can also be secured with screws, offering added installation flexibility.Easy to Install: This window lock features strong self-adhesive properties and includes screw holes for optional mounting. Use the included self-tapping screws for dual installation methods to ensure enhanced security. These easy-to-use locks securely fasten windows and can only be opened with the provided key, preventing children or pets from opening them without adult supervision.Sturdy and Durable: Aosite safety window locks are ideal for high-rise apartments, homes with children or pets, or any situation requiring extra security. The window safety catches are constructed with durable metal heads and high-tension steel cables, tested to withstand a horizontal force of 100 kg.Wide Applications: These safety locks can be used on refrigerators, toilets, cupboards, drawers, and doors to prevent children or pets from accessing potentially dangerous areas. They can also secure toilet lids and appliance doors such as microwaves and refrigerators.