Laser Retro Reflective Photo Sensor, 300mm–8m Adjustable

SKU: SUCH-PHOS-318M
$81.59
● 300mm–8m ● NPN/PNP, NO/NC ● 3mm spot size ● 650 nm red light
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🚚 Free shipping
🕒 Delivery date: 6-12 days
🔁 30-day Returns
Overview

The good-price laser retro-reflective photoelectric sensor offers an adjustable detection range of 300mm–8m, operates at 10–30V DC, and multiple NPN/PNP output modes. Its 3mm standard spot ensures precise positioning and stable detection, maintaining excellent repeatability (<5% Sr) even in complex environments. It is widely applicable for object positioning, area detection, automatic door systems, conveyor line monitoring, and various other scenarios.

Feature

Laser retro reflective photo sensor feature

  • SUCH laser retro-reflective photoelectric sensors feature an adjustable detection range from 300mm to 8m, paired with a red light spot as small as 3mm for stable and precise target recognition.
  • Equipped with multiple output modes including NPN, PNP NO, and NC, suitable for various control systems. The response time as fast as 10ms ensures reliable high-speed detection.
  • The photo sensor's lightweight PBT housing combined with an M12 reflector provides flexible installation options, delivering a compact and efficient overall structure.

Dimension (unit: mm)

Laser retro reflective photo sensor dimension

Detail

Laser retro reflective photo sensor detail

Wiring Diagram

Laser retro reflective photo sensor wiring diagram

Output Wiring Diagram

Laser retro reflective photo sensor output wiring diagram

Specs
Detection Distance 300mm–8m (adjustable)
Output Model NPN NO, PNP NO, NPN NC, PNP NC
Standard Target 100*100 mm white cardboard
Light Source 650nm red light
Spot Size Approx. 3mm standard
Indicator LED Red LED / green LED
Operating Voltage 10–30V DC
No-Load Current <10mA
Max Load Current 150mA
Leakage Current <0.01mA
Voltage Drop <1.5V
Switching Frequency 100Hz
Response Time 10ms
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 180mA
Cable φ4.0mm, 2m PVC cable, 3*0.15mm²
Product Size 31* 11*21mm
Reflector Size 61*50*7.5mm
Housing Material PBT plastic
Weight Approx. 45.8g + 10g (reflector)
Certifications CE, RoHS
Application
Laser retro reflective photo sensor for logistics conveying

Logistics Conveying

Laser retro reflective photo sensor for packaging equipment

Packaging Equipment

Laser retro reflective photo sensor for automatic door control

Automatic Door Control

FAQ

The laser retro-reflective photoelectric sensor operates by emitting a focused laser beam onto a reflector, which then returns the light to the receiver. When the target object obstructs the light path or alters the beam direction, the sensor outputs a switching signal. The laser spot is small and highly directional, enabling long-distance, precise, and highly stable detection.

The reflector can be replaced, but it must be a polarization-maintaining reflector or mirror reflector matching the original model to ensure correct return angle and intensity. During installation, keep the reflective surface clean and align it vertically with the sensor to prevent detection instability.

Laser beams feature a concentrated spot and strong resistance to stray light, making them less susceptible to interference from environmental reflections, metallic gloss, or external light sources. When used with a mirror reflector, only light matched to the reflector returns to the receiver. This effectively minimizes false triggers, ensuring precise and reliable detection.

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