High resolution: It can provide high-precision position information and is suitable for application scenarios that require precise control. Relative measurement: only records the relative position change of an object from a certain starting point, without knowing the absolute position of the object. Widely used: Widely used in industrial automation, robotics, machine tools and other fields to provide real-time position feedback. Selection points: When selecting, you need to consider factors such as resolution, output mode, operating voltage, and installation environment and cost.