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SUCH infrared retro-reflective photo sensors are specifically designed for high-precision positioning and long-distance object detection. With an adjustable detection range of 30–4000mm, 940nm infrared light source, and high-sensitivity receiver combination. The IR photo sensor features a wear-resistant ABS housing and supports multiple output modes including NPN/PNP and NO/NC, ensuring seamless compatibility with industrial systems such as PLCs, robotic arms, and packaging equipment.
Note: Detection range is 4 meters. The detection distance can be adjusted based on actual conditions.
SUCH photoelectric sensors feature pure copper wire cores for excellent conductivity. The matte, wear-resistant wire jacket ensures flexibility, waterproofing, and oil resistance, making them suitable for reliable operation in diverse environments.
Infrared retro-reflective photoelectric sensors operate by emitting an infrared beam toward a reflective plate. When the beam is accurately reflected back and detected by the receiver, the sensor maintains its “normal state.” If an object obstructs the light path, causing the echo signal to weaken or disappear, the sensor immediately outputs a switch signal to detect the presence of an object.
Compared to typical diffuse reflection structures, retro-reflective sensors utilize specialized reflectors. This design ensures more stable return light intensity and superior resistance to external interference. They remain insensitive to ambient light, dust, and background object variations, making them highly suitable for medium-to-long-range detection and high-reliability triggering scenarios.
Standard retro reflective sensors detect most opaque objects. However, for translucent materials like transparent bottles, glass, or thin films, the reflected light may be too weak, potentially reducing reliability. When facing highly reflective metals or mirrored surfaces, unstable reflection angles from the object itself may also cause false triggers. For stable detection of transparent objects, polarized reflective photoelectric sensors are recommended. These utilize polarizing filters and polarized reflectors to eliminate stray reflections, thereby maintaining detection accuracy for transparent objects.