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Position Switch

Position Switch

Position Switch, also known as limit switch or travel switch, is an electrical switch used to control and monitor the position of equipment. 

Common types of position switches 

Rotary limit switch

Usually has a rotating operating handle or cam. When it rotates to a specific position, the internal contacts will move. Commonly used to control the position of rotating equipment, such as forward and reverse control of motors, opening and closing control of valves, etc. 

Straight limit switch

Generally detects the linear motion position of an object through a retractable push rod or slider. When the object pushes the push rod or slider to a certain position, the switch contacts move. Commonly used in linear motion equipment, such as material conveying equipment in automated production lines, workbench movement control of machine tools, etc. 

Proximity switch

Includes inductive, capacitive, photoelectric, ultrasonic and other types. Among them, inductive proximity switches can only detect metal objects; capacitive proximity switches can detect various objects, including metals, non-metals and liquids; photoelectric proximity switches detect objects by emitting and receiving light; ultrasonic proximity switches use the reflection principle of ultrasonic waves to detect the position of objects. 

Position Switch

In what fields may position switches be used? 

Industrial automation

Used to control the movement position of various equipment on the production line, such as the positioning of material handling equipment, tool position control of machining centers, etc., to ensure the accuracy and reliability of the production process. 

Transportation

In transportation tools such as elevators, escalators, and subways, position switches are used to control the start and stop of equipment, the opening and closing of doors, and other operations to ensure the safety of passengers and the normal operation of equipment. 

Smart home

It can realize functions such as door and window opening and closing detection and curtain automatic control. For example, when the window is opened or closed to a certain position, the position switch can trigger the corresponding signal to realize automatic alarm or linkage control with other smart devices. 



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