N1S RS485 Laser Distance Sensor – Phase-Shift Ranging, Up to 250 m, 1 mm Accuracy

Measuring Range Options: 0.03–40 m / 0.03–80 m / 0.03–150 m / 0.03–250 m

Interface: RS485

Power Supply: DC 9–36 V

The N1 Series RS485 Laser Distance Sensor is a single-point, high-precision distance measurement sensor based on phase-shift laser ranging technology.

Featuring millimeter-level accuracy, long measuring range up to 250 m, and a robust RS485 interface, it is designed for industrial automation, monitoring, and control applications requiring stable long-distance measurement and reliable communication.

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  • Descriptions
  • Dimensions
  • Specifications
  • Applications
  • Downloads
  • Accessories

The N1s  Series RS485 Laser Distance Sensor adopts phase-shift laser ranging technology, a high-precision measurement method widely used for short- and medium-range applications. By continuously modulating the emitted laser beam and analyzing the phase difference between transmitted and reflected signals, the sensor calculates distance with millimeter-level accuracy and excellent repeatability.

Compared with simple time-of-flight solutions, phase-shift measurement offers superior precision for small target detection and control, making the N1 Series suitable for applications requiring stable and accurate distance feedback.

With an industrial RS485 interface, wide DC 9–36 V power input, and support for Modbus RTU, the N1 Series integrates easily into PLCs, industrial controllers, and monitoring systems. Its compact design, low power consumption, and wide environmental adaptability make it ideal for continuous industrial operation.

 

Specifications

Item Specification
Measurement Principle Phase-Shift Laser Distance Measurement (CW modulation)
Measuring Range 0.03–40 m / 80 m / 150 m / 250 m (optional)
Resolution 0.1 mm
Accuracy ±(1 mm + D × 5‰), D = measured distance
Repeatability ±1 mm
Sampling Rate 1 Hz / 5 Hz / 10 Hz / 20 Hz (default 1 Hz)
Laser Wavelength 650 nm
Optical Power < 3 mW
Laser Class Class 2 (auto-switch to Class 3 under weak reflection)
Laser Spot Type Dot laser
Spot Size ≤ 6 mm @ 10 m
Laser Lifetime ~20,000 h (optional wide-temp: 50,000–60,000 h)
Power Supply DC 9–36 V
Power Consumption 0.5 W @ 20 Hz; standby < 0.2 W
System Startup Time 600 ms
Communication Interface RS485
Baud Rate 4800 / 9600 / 19200 / 38400 / 57600 / 115200 (default 115200)
Serial Format 8 data bits, 1 stop bit, no parity, no flow control
Communication Protocols Modbus RTU / ASCII / Custom Hex
Reference Point Front reference
Operating Temperature –10 °C to +50 °C (optional –20 °C to +65 °C)
Storage Temperature –20 °C to +60 °C (optional –40 °C to +85 °C)
Operating Humidity < RH 85%
Dimensions (L×W×H) 53.69 × 30.28 × 17.8 mm
Net Weight 126.2 g
Gross Weight 187.2 g

Applications

  • Industrial automation and positioning systems
  • PLC-based distance monitoring and control
  • Robotics and AGV navigation
  • Equipment alignment and displacement monitoring
  • Small-target distance detection
  • Smart manufacturing systems
  • OEM laser ranging modules
  • Industrial measurement and feedback control

Dimensions Product Dimension Chart

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All Files

Title Upload Date File Type Action
MyAntennaRF_USB-to-TTL_RS232_Interface-Converter_User-Guide_v1.0_2024-03-12_EN-CN 2026-01-05 N/A Download
MyAntennaRF_USB-to-TTL_RS232_Interface-Converter_User-Guide_v1.0_2024-03-12_EN-CN 2026-01-05 N/A Download
Laser Distance Sensor Catalogue 2025 -MyAntenna 2025-12-26 N/A Download
L4 Series Lser Distance Sensor User Manual 250220 2025-12-26 N/A Download
L2 Series Lser Daistance Sensor User Manual 250325 2025-12-26 N/A Download
L3 Series Lser Distance Sensor User's Manual 231129 2025-12-26 N/A Download
L2 Series - User Manuals 2025-12-18 N/A Download
N1 Series User’s Manual 251112 2025-12-17 N/A Download
L1 Series Laser Distance Sensor -User Manual 2025-12-17 N/A Download
L1 Series - Laser Distance Senosr User Manual 2025-12-15 N/A Download
D1 Series User’s Manual 231205 2025-12-12 N/A Download

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