CHENSHUO Exterior Casement Window Locks,No-Drill Window Restrictor with Key, Adjustable Safe Durable Aluminum Alloy Security Limiter Prevents Falls for Toddlers & Pets

["Precise Size Compatibility: Key-Controlled Safety Mechanism: Includes a dedicated key (for locking/unlocking) to prevent unauthorized adjustments: only users with the key can modify the restrictor, eliminating accidental tampering by children.","Durable Aluminum Alloy Construction: This security limiter is built from sturdy aluminum alloy (weighing 3.15 oz/89.3g), resisting wear and impact to maintain long-term reliability—ideal for consistent home safety.","No-Drill Easy Installation: The 1.61-inch (41MM) wide, 1.10-inch (28MM) deep mounting bracket installs without drilling, fitting most sash/casement windows; set up takes minutes with included hardware.","Precise Size Compatibility: Window Locks Children Protection Window Restrictor fits window frames 0 to 0.63 inches thick (matching 0-16MM specs), with an adjustable opening length of 5.24 inches (13.3CM) to balance ventilation and fall prevention for toddlers and pets.","Perfect for Outward-Opening Windows: This Window Lock Children Protection Window Restrictor is engineered exclusively for outward-opening windows — it’s the go-to safety solution for high-rise apartment exterior windows, where it stops falls while letting in fresh air."]