Within the door opening range ?? 90 ?? ~ 180 ??: If your opening angle is greater than ?? 90 ??, this door closer with locking function can keep the door open at any angle. You don't need to use external force or no door stop to keep the door open. If you like a well-ventilated space or need to move goods frequently, this is the best choice. You only need to ?? pull the door less than 90 ?? and it closes automatically. Improve the quality of life: The interior door closer can close your door automatically and quietly. Improves your quality of life. You no longer need to shout ??do the door?? so often. Whether it's keeping your living room door warm or for commercial use, the interior door closer works smoothly and well. The interior door closer slowly closes the door within the range of 0~15?? to protect pedestrians from injury. Security: Automatic door closer can help you and your loved ones. This door lock keeps your front door automatically closed to prevent thieves from entering. This automatic door closer can be beneficial for security, especially when many people leave and leave their property. Wide scope of use: The hydraulic door closer has an adjustable closing and falling speed with an opening angle of 180 degrees. The superior door closer provides automatic closing for interior and exterior doors up to 60-85 kg and a door width of 930-1100 mm. The superior door closer contains a detailed and clear installation manual and an installation video. It will be an easy and smooth installation. Complete service: hydraulic door closer with parallel plate. Compared to other door closers, you do not need to purchase separately, which reduces your costs by 5 euros.