preventing break-ins through windows

A home owner from Vermont says:
Hi there! We're looking for a window venting lock that will allow us to crack our double-hung wooden windows open, but will not allow would-be burglars to open the window from the outside. Are your vent-locks mainly designed for child safety, or are they strong enough to prevent an adult from opening the lower sash of a window from the outside?

Profile picture of Donna
Donna from SWISCO responded:
Thank you for posting! Our 26-387 Face Mount Single Action Vent Latch Kit will certainly stop someone trying to open the window from the outside, but keep in mind that it will not stop the upper sash from being pushed down. If the top sash is stationary, however, then this sounds like a good solution!
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