1. Protect Your Child and Pet: Toddlers are naturally curious and may not recognize dangerous situations. This window safety lock is designed to help secure windows, sliding doors, and balconies, helping prevent accidents by limiting opening width to keep children and pets safe. 2. Easy to Use: This window restrictor uses strong 3M VHB adhesive for installation, providing a secure hold without damaging surfaces. Ideal for situations where drilling is not possible. The design eliminates the need for keys or passwords, reducing the risk of loss or forgotten codes, offering a simple and reliable user experience. 3. Adjustable Opening Control: Easily adjust the chain length to set the window gap between 3.5 cm and 19 cm. This allows for proper ventilation while maintaining safety for children and pets. Provides better airflow compared to standard window latches. 4. Enhanced Safety Design: Features a dual-button release mechanism that requires both buttons to be pressed at the same time to open. This design is easy for adults to operate but difficult for young children, providing an added layer of protection against accidental window opening. 5. Durable and Compatible: Constructed with high-quality ABS and a stainless steel chain, this restrictor is durable and supports up to 20 kg of tensile force. Suitable for most UPVC, metal, wooden, casement, and sliding windows. Helps limit window opening to enhance home safety. Material: ABS + Stainless Steel Weight: 60g (per piece)