Selection of protection length: The A series photoelectric protection device is suitable for protecting machine tools (machine table tops) or protection areas with a length of less than 2 meters. The B series photoelectric protection device is suitable for protecting machine tools (machine table tops) or protection areas with a length of less than 5 meters.

Selection of protection height: For press machines, the protection height should not be less than: machine tool slider stroke+adjustment amount; For other machinery or hazardous areas, corresponding specifications of photoelectric protection devices should be selected based on the height of the area that needs to be protected.

Selection of optical axis spacing: The smaller the optical axis spacing, the denser the beam, and the higher the detection accuracy. A light curtain with a spacing of 10mm between optical axes is used to protect fingers; 20mm spacing for palm protection; 40mm spacing for arm protection; 80mm spacing usually protects the human body.

Detection accuracy: Detection accuracy=optical axis spacing+aperture, for example, if the optical axis spacing is 10mm and the aperture is 8mm, the resolution is 18mm

Response time: The smaller the response time, the faster and safer the light curtain reaction.

Output method: Sensors generally provide dual NPN or PNP outputs, while safety light curtains with single output are prohibited from use in the stamping industry or hazardous working environments.