In the locking design, abandon the traditional key and password way, do not worry about dropping the key and forget the password, have a better usage experience. The gap size from 3.5 cm to 19 cm, it allows way more air flow than having the upvc window on the latch.
eBay
Durable Sliding Windows Restrictor Windproof Brace Stopper Children Safety Locks Window Support Opener Fixed Angle Controller
Aliexpress UK
This product is a set of two window restrictor locks designed for child safety and security. Made of durable zinc alloy and stainless steel, these adjustable security stoppers are suitable for various room types including the bedroom, living room, kitchen, and bathroom. The silver colour and sleek design make them blend seamlessly into any home decor. With a bay window style and sliding window lock type, these X2 window restrictor locks provide peace of mind for parents and home owners.
eBay
Free Punch Window Lock Limiter Windows Handle Restrictor Lock Anti Falling Guard Locking Buckle High Rise Child Protection Locks
Aliexpress UK
Screws to Top or Side Hung windows. Timber or UPVC. Strong Key Locking Window Opening Restrictor. Ideal for security & safety. Simply screw in place to restrict the window from opening.
eBay
EUDEMON 1PC Window Lock Child Protection Window Restrictor Baby Safety Stopper Falling Prevention Locks Limiter
Aliexpress UK
Easy to Install: Our window restrictor can be installed with only a screwdriver. It is convenient for you to quickly fix the child lock stopper to the window. 1Pair/2pcs Window Restrictor with Screws.
eBay
5 Adjustable Angles window opening limiter latch position stopper casement wind brace Child Safety Window Door Restrictor Lock
Aliexpress UK
The Window Restrictor is designed to take a minimum of a 35kg load when it is pushed open. Window Cable Restrictor Lockable TSS. Lockable Window Cable Restrictor. 1 x Locking Cable Restrictor In Selected Finish.
eBay
Adjustable window Sash Limiter stopper wind brace Kids Safety Lock Window Restrictor Opening Security Door latch Guard Protecter
Aliexpress UK
Type:Window Restrictor Locks. [Durable 304 Stainless Steel] These Window Restrictors with Great Corrosion Resistance, High Toughness and Rust Protection, Extend Its Service Life. [Reasonable Design] It Can Be Released To Facilitate Full Opening of the Window.
eBay
EUDEMON 1PC Child Protection Window Restrictor Adjustable Window Lock Child Safety Stopper Falling Prevention Locks Limiter
Aliexpress UK
Type:Window Restrictor Locks. [Reasonable Design] It Can Be Released To Facilitate Full Opening of the Window. It Automatically Re-Engages Restricted Position on Closing of The Window, Convenient for Our Use.
eBay
Aluminum Alloy Window Locks with 2 Keys Window Restrictor Lock Durable Portable Practical Exquisite Convenient for Hospital Bank
Aliexpress UK
Description: Easy to assemble and operate Sash Jammers can be used both, UPVC windows and doors. Sash Jammer Easy to assemble and offer excellent added security - Simply switch to secure the handle to the frame. Ideal solution for those concerned about a common burglary technique called "levering" Have a crowbar is to wedge the window mechanism of place. Features: 100% Brand new and high quality. Upgrade the security on your UPVC window or door. Easy to install and it comes with fixing screws and knock on cover caps. Specification: Material: Zinc alloy Enhance security of UPVC windows and doors. Color:white Package include: 4 X Sash Jammers.
eBay
Free Punch Metal Window Lock Limiter Windows Handle Restrictor Lock Children Safety Protection Locks Home Guard Locking Buckle
Aliexpress UK