Safety:To prevent children from accentual falls avoid accidental opening of children accidentally window
Security: To prevent burglary, it can lock the window when the window ajar.
Ventilation: Keep ventilated, fresh indoor air.
Appearance: Professional surface treatment, fastness, concise and beautiful; Use high-quality materials, easy to open, suitable for most of plastic steel Alloy window.
Function:Secondary lock provides increased security when ventilating or securing your sliding door or window.