• Yunshis SK-A100 laser distance sensor module with top display and control buttons, angled view
  • Rear/side view of SK-A100 sensor showing 4-pin circular connector and product label with QR code
  • SK-A100 laser distance sensor with attached cable, top panel showing LED readout and buttons
  • Front view of distance sensor with optical window in orange faceplate and side label
  • Two SK-A100 sensor units shown together, one with connector end and one with front optical window
  • Pair of sensor modules side by side highlighting connector port on one unit and optical window on the other
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Yunshis SK-A100 Series 100m/150m Laser Distance Sensor with RS485 Modbus RTU, 4-20mA, TTL for Robotics

Yunshis SK-A100 Series 100m/150m Laser Distance Sensor with RS485 Modbus RTU, 4-20mA, TTL for Robotics

Yunshis

$252.50 USD
$252.50 USD
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Overview

The Yunshis SK-A100 series Laser Distance Sensor is a single-point, phase-based distance measurement sensor with a digital display, designed for robotics and industrial automation measurement tasks. It supports multiple output options (TTL/UART, RS485 Modbus RTU, and 4–20 mA) to fit different control and data acquisition requirements.

Key Features

  • Single-point phase measurement with millimeter-level performance (repeatability and accuracy values vary by source; see Specifications)
  • Digital display with real-time distance data display (4-digit LED display is stated)
  • Multiple interfaces: TTL (UART output), RS485 (Modbus RTU), and 4–20 mA analog output
  • Laser safety class: Class 2 / Class II (IEC 60825-1:2014, EN 60825-1:2014 stated)
  • Industrial-grade protection: IP67 (stated)
  • Measurement modes: supports single measurement and continuous measurement; includes fast measurement, precision measurement, and automatic measurement
  • Laser lifespan: over 10,000 hours (stated)

Specifications

Model Variants (Comparison)

Parameter SK-A100 SK-A100A SK-A100B SK-A100C
Variant Description Standard Version High Frequency Optimized for Black Targets Long Range
Measurement Range 100 m 100 m 100 m 150 m
Frequency 3 Hz 20 Hz 1-20 Hz 1-20 Hz
Repeatability 2 mm 2 mm 2 mm 2 mm
Accuracy (spec table) ±3 mm ±3 mm ±3 mm ±3 mm

Optical / Measurement

Target Object Natural surface of static/dynamic targets or dedicated reflector
Light Source Red visible laser, wavelength 635 nm
Laser Safety Class Class 2 (IEC 60825-1:2014, EN 60825-1:2014); Class II is also stated
Typical Spot Size (Elliptical) 5x3mm @ 10m; 10x6mm @ 25m; 15x10mm @ 50m; 30x20mm @ 100m
Laser Lifespan Over 10000 hours
Indoor Measuring Range (stated) 0.03–100 m
Outdoor Range (stated) 50 m (with reflector)
Distance Accuracy (stated) ±2 mm
Measurement Rate (stated) 3 Hz / 20 Hz

Mechanical & Electrical

Operating Voltage (spec table) DC 9~35 V
Power Supply Standard (stated) 9–36 V
Power Consumption <1.5 W
Housing Material Aluminum
Dust Lens Material High-transparency Quartz Glass
Dimension (L*W*H) 52 x 52 x 86 mm
IP Rating IP67
Weight 230 g
Operating Temperature -20 ~ 60 C
Connector & Cable M12*5 aviation plug with 1m cable

Interfaces / Protocols

Supported Protocols (spec table) RS485-Modbus RTU / 4-20mA / Digital Display / UART
Interfaces (stated) TTL / RS485 / 4–20 mA
TTL Notes (stated) UART output is adopted for convenient data transmission and interaction
RS485 Notes (stated) Supports standard RS485 Modbus RTU protocol
4–20 mA Notes (stated) Features 4-20mA analog output function

Mechanical Drawing Dimensions (stated)

Overall size 52 x 52 x 86 mm
Body length (stated in drawing) 80 mm
Mounting hole diameter (stated in drawing) Ø3 mm
Additional drawing dimensions (stated) 3.5 mm; 2.5 mm; 11 mm; 30 mm; 26 mm; 10 mm; 18.06 mm; 12 mm; 13.5 mm

Applications

  • Humanoid robots
  • Quadruped robots
  • Robotic arms (including material level robotic arm applications)
  • Exoskeletons
  • AGV vehicles
  • ARU robots
  • Driving positioning
  • Subway/metro tunnel safety monitoring
  • Crane positioning and anti-collision
  • Bridge deformation monitoring
  • Grain storage
  • Automated medical equipment

Manuals / Drawings

For interface selection and integration guidance (TTL/UART, RS485 Modbus RTU, or 4–20 mA), contact [email protected] or visit https://rcdrone.top/.

Details

Yunshis SK-A100 series laser distance sensor with digital display and TTL/RS485/4–20 mA outputs (100 m)

Designed for robotics and industrial automation, the SK‑A100 series combines a real‑time digital display with flexible I/O options including TTL/UART, RS485 Modbus RTU, and 4–20 mA.

SK-A100 laser distance sensor front view with LED distance readout and IP67 industrial protection callouts

An IP67-rated aluminum housing and clear 4‑digit LED readout make integration and on-site checks straightforward.

SK-A100 communication interface options: TTL/UART, RS485 Modbus RTU, and 4–20 mA analog output versions

Choose the interface that matches your controller and wiring—UART/TTL for simple serial links, Modbus RTU over RS485 for industrial networks, or 4–20 mA for analog PLC inputs.

Key indicators for SK-A100 series including laser safety class, measurement modes, parameters, and service life notes

Multiple measurement modes support both single-shot checks and continuous monitoring, with laser safety class details provided for proper deployment.

SK-A100 application scenarios including material level robotic arms and automated medical equipment distance measurement

Common uses include robotic arm material level tasks and automated equipment where stable single-point distance feedback is needed.

Industrial use cases for SK-A100 sensor: crane positioning/anti-collision and metro tunnel safety monitoring

Suitable for long-range positioning and safety monitoring projects such as crane anti-collision and tunnel/metro infrastructure work.

Wide application collage: positioning, subway tunnel monitoring, robotic arms, medical equipment, bridge monitoring, grain storageSK-A100 series mechanical dimensions drawing with front, side, and bottom views for mounting reference (52×52×86 mm)

Mechanical drawings help confirm fit for brackets, enclosures, and tight mounting locations before installation.

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