![]() If the sensors triggers a person or an object, it will cause the doors to reopen and does not close until the person moved away or the object is removed from the doorway. The beam detects objects on the doorway when opening and closing. Infra red door sensors or beams are now common in modern days elevator. Mechanical door bumpers (or door buffers) are usually found in older elevators or elevators installed in Asia, especially on elevators installed by Mitsubishi, Hitachi, and others. Mechanical bumpers Main article: Door bumpers The automatic elevator car door operator is the device usually installed on the top of the elevator car to operate the doors opening and closing. ![]() There are two elevator door types: manual and automatic.Įscape hatch/Liftwell rescue doors Elevator door devices Door operator Main article: Door operator ![]() ![]() Types of elevator doors Main article: Elevator door types ![]()
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