What Is A Door Closer?
Due to high technology development, some entrances and exits of malls have motion censor doors because the old doors can cause traffic to people coming in and out of the mall. But for some employee entrances or small offices, their doors are closed by door closers. These closers are the mechanical devices attached on top of doors to close them when they are automatically opened. There are many criteria when choosing a door closer, aside controlling traffic others may include safety a and risk from vandalism. The downside of these devices though is that they are often times hard to open for the disabled.
