quick-to-install and easy-to-use door handle chain, which looks even more quality and not bulky. The lock is secured by 2 wood screws on the door frame or on the wall next to it with two additional anchors. However, one should in advance about making quite a few thoughts on how the underground ordered and is able to lock securely in position also. The lock to open the chain in an emergency, can be swiveled through 180 degrees. Thus one comes easily approach from the outside, provided that the door gap can be opened correspondingly far. An arm should, however, already fit through without being able to naturally strip the ring of the jack. There are two keys in the package.