Yes. The first option for increasing security of your sash windows are screw operated fasteners. We can equally use high security sash stop locks to increase the level of protection for your windows without tampering with the traditional look and feel of your sash windows. The stop locks come in a variety of finishes so it is easy to match them with existing furniture and decor. The locks can also act as a limiter as they allow the sashes to be left open slightly while keeping the windows secure against intruders. The third option we use is discreet self-contained electronic shock alarms. With these, your windows will use visual and auditory warnings to ward off burglars.