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  2. Automatic door - Wikipedia

    en.wikipedia.org/wiki/Automatic_door

    Automatic door. A pair of automatic doors. An automatic door, also known as an auto door, is a door that opens automatically, without the need for human intervention or usually upon sensing the approach of a person. A person can be detected by microwave pulses, infrared sensors, or pressure-sensing pads. [1]

  3. Door closer - Wikipedia

    en.wikipedia.org/wiki/Door_closer

    A door closer is a mechanical device that regulates the speed and action of a door ’s swing. [1] Manual closers store the force used to open the door in some type of spring and reuse it to close the door. Automatic types use electricity to regulate door swing behavior. Door closers can be linked to a building's fire and security alarm systems.

  4. Sliding door operator - Wikipedia

    en.wikipedia.org/wiki/Sliding_door_operator

    The operator is placed in the space above the sliding door. An electric motor, geared down to get a lower speed and a higher torque, drives a pulley at one end of a belt. The door is clamped to the belt. To open the door, the motor turns the pulley, which in turn turns the belt, which in turn drags the door. To close the door, the reverse occurs.

  5. Dorma - Wikipedia

    en.wikipedia.org/wiki/DORMA

    Automatics: automatic door operators, sliding doors, swing doors and revolving doors, automatically operated sliding glass panel partitions; Glass: fittings, door and side panel rails, locks; Security: access control systems, security door fittings, emergency exit control systems, lock and electric keeps, security and detection systems

  6. Sliding door - Wikipedia

    en.wikipedia.org/wiki/Sliding_door

    A sliding door is a type of door which opens horizontally by sliding, usually parallel to (and sometimes within) a wall. Sliding doors can be mounted either on top of a track below or be suspended from a track above. Some types slide into a space in the parallel wall in the direction of travel, rather than the door sliding along the outside of ...

  7. Electromagnetic lock - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_lock

    Operation. The principle behind an electromagnetic lock is the use of electromagnetism to lock a door when energized. The holding force should be collinear with the load, and the lock and armature plate should be face-to-face to achieve optimal operation. The magnetic lock relies upon some of the basic concepts of electromagnetism.