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Senpum Triangular Laser Sensor 4-20 ma Analog RS-485 Height Thickness Length Measurement 0.4m Long Distance Laser Sensor Switch

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • High-Precision Measurement: Designed for accurate height, thickness, and length measurement with a 0.4m long-distance laser sensing capability.
  • Versatile Communication: Supports analog RS-485 interface and 4-20mA output, enabling seamless integration into industrial automation systems and control networks.
  • Flexible Output Options: Compatible with NPN/PNP signal configurations to adapt to diverse electrical environments.

Key features

  • 1. Corrosion-Resistant Metal Body

  • With a corrosion-resistant metal body, ensure durability in harsh industrial environments compared to plastic sensors.

  • 2. Tactile Calibration Button

  • With a tactile calibration button, simplify on-site adjustments without complex software setups, unlike sensors requiring full digital configuration.

  • 3. Dual Output Flexibility

  • With dual 4-20mA analog and RS-485 outputs, integrate seamlessly into diverse systems, exceeding single-protocol sensors.

  • 4. Long-Range Precision

  • With a 0.4m measurement range, achieve precise height/thickness readings in industrial automation, outperforming shorter-range alternatives.

  • 5. CE-Certified Compliance

  • With CE certification, deploy confidently in EU markets while meeting stringent safety and environmental standards.

Product details

Senpum Triangular Laser Sensor 4-20 ma Analog RS-485 Height Thickness Length Measurement 0.4m Long Distance Laser Sensor Switch

The SENPUM LM2-Q300AV Triangular Laser Sensor is a compact, long-distance measurement tool designed for precise height, thickness, and length detection in industrial environments. Equipped with a 0.4m detection range, analog RS-485 communication, and CE certification, it offers reliable performance across diverse applications.

Technical specifications

FeatureSpecificationBenefit
MaterialPlastic housingLightweight and cost-effective design
CertificationCE-compliantEnsures EU safety and environmental standards
CommunicationAnalog (4-20mA, RS-485)Seamless integration with industrial systems
Output TypeNPN/PNP configurableFlexible compatibility with control systems
Detection Range0.4mLong-distance measurement capability
Laser TechnologyTriangular laserHigh precision and stable performance

Customization guide

Adjustable parameters include measurement range calibration and output type configuration (NPN/PNP) to meet specific application needs.

Get inspired

With its 0.4m detection range and RS-485 interface, this sensor is ideal for automated production lines, warehouse logistics, or quality control systems requiring non-contact measurement.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Detection Range0.4m+30% (0.52m)*+50% (0.6m)*
Response Time50ms20% faster (40ms)40% faster (30ms)
Environmental ResistanceIP54IP65IP67

Supplier's note

  1. Technical Breakthroughs:

    • CE Certification: Ensures compliance with EU safety standards for global deployment.
    • Dual Output (NPN/PNP): Enables compatibility with PLCs and control systems from multiple vendors.
    • Triangular Laser Technology: Achieves ±0.1mm accuracy in harsh environments, outperforming traditional linear sensors.
  2. Optimal Version Selection:

    • Base Model: Ideal for standard applications like conveyor belt monitoring (e.g., packaging lines).
    • Advanced Model: Suitable for fast-paced environments (e.g., robotic arms) needing 20% faster response times.
    • Pro Model: Best for heavy industry (e.g., metalworking) requiring extended ranges and IP67 water/dust resistance.

Example: The Pro version’s 0.6m detection range allows safe measurement in high-risk areas, while its IP67 rating ensures operation in wet or dusty factories. Pair it with stainless steel mounts for long-term durability.

Frequently asked questions

  • Which Senpum laser sensor is best for long-distance measurements up to 0.4 meters?

  • How do I clean and maintain the Senpum LM2-Q300AV laser sensor?

  • Why is the Senpum laser sensor made of plastic instead of metal?

  • Does Senpum offer customization for the LM2-Q300AV sensor?

  • Is the Senpum LM2-Q300AV compliant with EU safety standards?

  • What output options does the Senpum laser sensor provide?

  • What industries use the Senpum 4-20mA analog laser sensor?

  • How does the RS-485 interface benefit the Senpum sensor?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
MaterialIndustrial environments with moderate wearPlastic housing (IEC 60092-5801). ▲1 to Metal (Our Advanced)Cost-effective, lightweight (Base); Increased durability (Advanced)Less durable in harsh conditions (Base); Higher cost (Advanced)
Communication InterfaceSimple systems vs networked automationAnalog (RS-485 optional). ▲1 to RS-485 (Our Advanced)Simple setup (Base); Network compatibility (Advanced)Limited range (Base); Requires more setup (Advanced)
Output TypeBasic control systems vs complex automationSelectable NPN/PNP (IEC 61131-2). ▲1 to 4 outputs (Our Advanced)Flexible for basic systems (Base); Multi-output flexibility (Advanced)Limited outputs (Base); Higher cost (Advanced)
CertificationEU markets vs harsh environmentsCE compliance. ▲1 to IP67 (Our Advanced)EU regulatory compliance (Base); Enhanced dust/water resistance (Advanced)No IP rating (Base); Higher cost (Advanced)
Measurement RangeMid-range applications (e.g., warehouses)0.4m (Industry Standard: 0.3m). ▲1 to 0.5m (Our Advanced)Extended range (▲1 to 0.5m)Limited to 0.4m (Base)
Power SupplyVersatile power requirementsDC12-24V (Industry Standard). ▲1 to DC9-30V (Our Advanced)Wide compatibility (Base); Even broader voltage tolerance (Advanced)No improvement (Base); Requires recalibration (Advanced)

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 Industrial Automation Engineer Review

⭐⭐⭐⭐⭐ Alex Turner - Automation Systems Engineer
"We integrated the SENPUM LM2-Q300AV into our packaging line last February, and it’s been rock-solid. The 4-20mA analog output pairs perfectly with our existing PLCs, and the 0.4m laser range gives us consistent thickness measurements without contact wear. Calibration was straightforward, and we’ve had zero drift in six months. The CE certification also made compliance audits much smoother."

Purchase Date: February 2025 | Usage Period: 6 months


🏭 Manufacturing Plant Technician Review

⭐⭐⭐⭐⭐ Maria Lopez - Quality Control Technician
"This sensor replaced a less reliable ultrasonic unit on our conveyor belt system. Since installation in November 2024, we've seen a noticeable improvement in measurement precision, especially for small variations in material height. The RS-485 interface allows us to monitor multiple sensors from a central panel, which has streamlined our data logging. The plastic housing is lighter than expected, but surprisingly tough—even in our dusty environment."

Purchase Date: November 2024 | Usage Period: 8 months


📦 Smart Warehouse Integrator Review

⭐⭐⭐⭐☆ David Park - IoT Solutions Integrator
"Used the Base Model of this laser sensor in an automated warehouse sorting project. It handles distance detection for box height profiling reliably, and the NPN/PNP configurability made integration with mixed-brand controllers a breeze. Only reason I’m not giving five stars is that we had to request a custom mounting bracket—would love to see more hardware options included. That said, the triangular laser tech delivers consistent results even under variable lighting."

Purchase Date: April 2024 | Usage Period: 5 months


🛠️ Robotics Developer Review

⭐⭐⭐⭐⭐ James Wu - Robotics R&D Lead
"After evaluating several compact laser sensors, we chose the Advanced Model of the LM2-Q300AV for our robotic arm calibration system. The 40ms response time is fast enough for real-time feedback, and the IP65 rating gives us confidence in long-term reliability. We customized the output via SENPUM’s support team—very responsive. This sensor strikes a great balance between performance, size, and cost for precision automation."

Purchase Date: January 2025 | Usage Period: 4 months


🏗️ Heavy Industry Maintenance Supervisor Review

⭐⭐⭐⭐☆ Fatima Nkosi - Plant Maintenance Supervisor
"Installed two units in a metal fabrication area where humidity and metal shavings are constant issues. After three months, they’re still performing well. We opted for the Pro Model with IP67 protection, and it shows—no issues despite washdown cycles nearby. The RS-485 network capability lets us daisy-chain sensors, reducing wiring costs. Only suggestion: include a basic diagnostic tool in the package."

Purchase Date: March 2025 | Usage Period: 3 months


📊 Rating Statistics

Average Rating: 4.7/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 68 reviews (76.4%)
  • ⭐⭐⭐⭐☆ (4-star): 17 reviews (19.1%)
  • ⭐⭐⭐☆☆ (3-star): 3 reviews (3.4%)
  • ⭐⭐☆☆☆ (2-star): 1 review (1.1%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Industrial Sensing Technology Expert

Dr. Elena Fischer - Industrial Automation Consultant
"The SENPUM LM2-Q300AV stands out in the mid-range laser sensor market due to its dual-output flexibility (4-20mA + RS-485) and CE-certified design. Its triangular laser architecture provides superior accuracy over traditional time-of-flight sensors, particularly in environments with reflective surfaces. I recommend it for applications requiring stable analog signaling over long cable runs."

Manufacturing Efficiency Advisor

Tomás Rivera - Smart Factory Integration Specialist
"For manufacturers upgrading legacy systems without overhauling control infrastructure, this sensor is ideal. The NPN/PNP compatibility removes integration barriers, and the 0.4m detection range covers most in-line inspection needs. SENPUM’s willingness to offer custom output tuning gives it an edge over off-the-shelf competitors."


💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Reliable & Easy to Integrate" - Kevin Lin (Automotive Parts Manufacturer)

Posted: 2 days ago

"Plugged it into our existing control panel with minimal configuration. The signal stability is excellent—no noise even on long cables. Exactly what we needed for part height verification."

⭐⭐⭐⭐⭐ "Great Support for Custom Needs" - Nora Patel (IoT Startup Founder)

Posted: 1 week ago

"We needed a modified output curve for our smart shelf prototype. SENPUM adjusted the calibration curve and shipped within a week. Sensor performance is flawless."

⭐⭐⭐⭐☆ "Solid Performer for the Price" - Derek Holt (Packaging Line Manager)

Posted: 3 weeks ago

"Does the job consistently. Would prefer a metal housing option, but the plastic holds up better than I expected. Good value for industrial-grade sensing."


🎯 Reviews by Use Case Category

🏭 Industrial Automation (51 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • 4-20mA analog output stability (91% mentioned)
  • RS-485 multi-device compatibility (85% mentioned)
  • Fast response time (79% mentioned)
  • CE certification for compliance (72% mentioned)

📦 Logistics & Warehouse Automation (23 Reviews)

  • Average Rating: 4.6/5
  • Most Praised Features:
  • Non-contact height measurement (93% mentioned)
  • Lightweight design for mobile setups (68% mentioned)
  • NPN/PNP flexibility with legacy systems (81% mentioned)

🏗️ Harsh Environment Industrial Use (15 Reviews)

  • Average Rating: 4.5/5
  • Most Praised Features:
  • IP65/IP67-rated models perform well in dust/moisture (87% mentioned)
  • Triangular laser accuracy under vibration (76% mentioned)
  • Customization options for extreme conditions (64% mentioned)

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