Two-Stage Locking
Window additional security with a convenient two-stage locking mechanism. This security system reliably and visibly protects your aluminum, wood, or plastic windows and patio doors from unwanted guests. The locking mechanism operates in two stages. Stage 1, the presence protection, is activated by lightly pressing the locking bolt. You can then open the additional security without a key. Stage 2 is the total locking mechanism. By fully pressing the bolt, the security can only be opened with one of the two supplied keys. In this state, it can withstand a pressure of over a ton. The additional security is suitable for windows and patio doors with a frame thickness of up to 25 millimeters.