Function

 1,90° Hold-open function : door can deep standstill when door is open at  90° .    

 2,Buffer dunction : door closer wil create resistance to avoid too much forces , when open the doors and hit the wall by closing quickly & resistance can be adjustment .

 3,Delayed closing function : between 180° -65 ° , preset by factory is 20 seconds , which can be reduced to 1 second to facilitate the olds & disbilities . 

 4,Function of closing forces adjustment : closing forces is decided by different size & weight of door , force adjustable door closer can adjust it to min , forces to reduce resistance and faciitate to olds & disabilities .