1. First, determine the position where the label will be pasted, the horizontal position and the vertical position. Adjust the position of the conveyor belt or guide rail to control the position of the label.

2. Secondly, adjust the position of the electric eye according to the size and shape of the label. Fine-tuning horizontally and vertically ensures accurate detection of labels. Adjust the sensitivity of the electric eye according to the color and reflection of the label. Ensure that tags are accurately detected by adjusting the gain or sensitivity settings of the sensor.

3. Finally, after adjusting the position and sensitivity of the electric eye, test to ensure accurate detection and fit of the label.