Special removable design---Compared with the window limiter in the market, the window limiter has no key, so there is no risk that the key will lose and can't open the window . The special detachable design makes it easy to change the window opening position to fix the window at a small distance. No baby falling --- Help to fix the window and meet the wind demand. The maximum opening window distance is 7cm, it is much smaller than the distance babies will fall from the window. The window lock can withstand 27 kg of pushing, and 30 kg of tension, no risk of baby opening the window and falling. And there is no worry about closing the window in the strong wind. the window or scare Babies Resistance to life smoothing: install the window limiter with 3M VHB adhesive, no drills or tools required. 3M VHB adhesive with strong viscous (the effect will be me after 72 hours). and can be easily removed without any residue, safe for the window. Strong temperature resistance of -30? to 90?, without worrying about hot summer and cold winter. Waterproof and wide range of applications --- PC and ABS material makes it stronger and brings more long . Waterproof material and adhesive tape make you worry free from rainy days. The window limiter can be used on casement window and casement window.