Window Lock for Windows & Doors - Zinc Alloy Adjustable Sash Latch 360° Rotatable Security Restrictor Fits PVC/Aluminum Frames

• 【Child safety protection lock】 The three-level pressure regulation limits the opening of the window to 2-10cm. Can withstand a lateral force of 50kg, prevent falls, and maintain ventilation.
• 【Aerospace-Grade Construction】 Zinc alloy body+304 stainless steel screws, passed 200hr salt spray test- Under extreme temperatures of 30 ℃~80 ℃, it does not deform and is 5 times more durable than plastic locks.
• 【Smart Universal Installation】 The card slot is compatible with a window frame thickness of 12-28mm. The 3-minute installation tool includes screws.
• 【Discreet Safety Guardian】 Wanxiang Crescent Window Lock, Home Security Guarantee, Anti theft and Anti misoperation
• 【Screw Caps】 To make the sash jammers more aesthetically pleasing and to allow the swing arm to blend in with your upvc doors or windows

Engineering safety enters every window Precision Engineering: ✓ Dynamic pressure control Universal adjustment knob Prevent overvoltage from damaging the window frame Silicone cushion protects the paint surface from leaving marks ✓ Installation Scenarios Children's room sliding window safety upgrade Window protection for high-rise apartments Balcony pet safety isolation Hotel/school window compliance renovation