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    IR Retro Reflective Photoelectric Sensor, 30–4000mm

    SKU: SUCH-PHOS-504M
    $89.68
    ● 30–4000mm ● NPN/ NPN, NO+NC ● IR retro reflection type ● 940nm infrared light
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    🕒 Delivery date: 6-12 days
    🔁 30-day Returns
    Overview

    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.

    Feature

    • High-Performance Module: The transmitter and receiver modules of the retro-reflective photoelectric sensor utilize high-power, high-quality components resistant to signal attenuation, ensuring more stable detection accuracy and performance.
    • Voltage Stabilization Module: Stabilizes internal voltage with short-circuit, overload, and reverse polarity protection. Wide DC 10-30V voltage range ensures reliable sensor operation.
    • Smart Chip: This infrared photoelectric sensor features rapid response times, powered by a high-quality smart chip that delivers faster computation and enhanced precision.

    Dimension (unit: mm)

    IR retro reflective photo sensor dimension

    Detail

    IR retro reflective photo sensor detail

    Note: Detection range is 4 meters. The detection distance can be adjusted based on actual conditions.

    Wiring Diagram

    IR retro reflective photo sensor wiring diagram

    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.

    Specs
    Detection Distance 30–4000mm (adjustable)
    Standard Target 200*200mm white cardboard
    Light Source 940nm infrared light
    Housing Material ABS
    Indicator LED Red LED
    Output Models NPN NO, PNP NO, NPN NC, PNP NC
    Operating Voltage 10–30V DC
    No-Load Current <15mA
    Max Load Current 150mA
    Leakage Current <0.01mA
    Voltage Drop <1.5V
    Switching Frequency 100Hz
    Response Time 5ms
    Hysteresis <15% (Sr)
    Repeat Accuracy <5% (Sr)
    Protection Rating IP55
    Operating Temperature 0°C to +55°C
    Temperature Drift
    Short-Circuit Protection Yes
    Overload Protection 300mA
    Cable φ5.0mm, 2m PVC cable, 3*0.33mm²
    Weight Approx. 97g + 10g reflector
    Product Size 50*50*18mm
    Certifications CE, RoHS
    Application
    Assembly line counting

    Assembly Line Counting

    Access control and safety devices

    Access Control & Safety Devices

    High-speed object monitoring

    High-Speed Object Monitoring

    FAQ

    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.

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