Application：

It is installed at the position link to outside, in factories, shopping malls, hospitals, schools and so on. To prevent unauthorized outsiders enter the inner, at the same time ensure all persons quickly flee in emergency.

Detail:

Open side of the door must be consistent with the escape direction. Without any key, internal person can easily and quickly opened the door only by pressing or pushing. The width of the escape door should be based on the number of escape, appropriate choose more wide.