• Yunshis SK40 LiDAR 40m laser distance module, angled view showing optical window and PCB
  • Laser distance sensor module front angle with lens housing and onboard QR-code label on PCB
  • Two views of the LiDAR distance module shown together, highlighting top and underside PCB layouts
  • Side/rear view of sensor module showing pin header/board connector and component layout
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Yunshis SK40 LiDAR 40m Laser Distance Module, UART TTL 3.3V, USART RS232/RS485 for Robotics

Yunshis SK40 LiDAR 40m Laser Distance Module, UART TTL 3.3V, USART RS232/RS485 for Robotics

Yunshis

$73.75 USD
$73.75 USD
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Overview

Yunshis SK40 LiDAR is a compact laser distance module designed for millimeter-level distance measurement and integration into robotics and automation systems. It supports single-point phase-shift ranging and communicates via UART/TTL for easy connection to embedded controllers.

Key Features

  • Single-point phase-shift ranging
  • Millimeter-level distance unit (mm) and 1 mm distance resolution
  • UART TTL communication (TTL 3.3 V level)
  • Supported interfaces: USART; RS232/RS485 (external level conversion module required)
  • Designed for high precision, low power consumption, and compact size
  • Key optical components referenced: laser transmitter, laser receiver, high-quality laser diode, photoelectric chip

Specifications

Product Performance Measurement Range 0.03 m to 40 m (Reflectivity: 1.0, Ambient Light Intensity: 3 kLux)
Distance Unit mm
Measurement Time 0.3 to 4 seconds (Reflectivity: 1.0, Ambient Light Intensity: 1 kLux)
Accuracy Marketing text lists: ±2 mm; technical specification lists: ±3 mm (Reflectivity: 0.2 to 1.0, Ambient Light Intensity: 1 kLux)
Distance Resolution 1 mm
Continuous Measurement Frequency 3 Hz / 20 Hz (Reflectivity: 1.0, Ambient Light Intensity: 1 kLux, Distance: 0.03 m to 10 m)
Reflectivity Range 0.02 to 1.0
Optical Parameters Laser Class CLASS-II
Laser Power < 1 mW
Laser Wavelength λ = 610 nm to 690 nm
Spot Diameter < 8 mm @ 10 m
< 20 mm @ 20 m
< 40 mm @ 40 m
Spot Distribution Range Scattered target circle diameter < 100 mm @ 10 m target
Scattered target circle diameter < 200 mm @ 20 m target
Scattered target circle diameter < 300 mm @ 30 m target
Electrical Parameters Power Supply / Operating Voltage Marketing text lists: DC 3.3 V
Dry Battery Version: DC 2.5 to 3.6 V; Recommended 3.3 V
Lithium Battery Version: DC 3.5 to 4.2 V; Recommended 4.0 V
Current (Dry Battery Version) Shutdown leakage current < 10 uA @ 3.3 V
Standby current < 30 mA @ 3.3 V
Laser on current < 50 mA @ 3.3 V
Continuous measurement mode < 100 mA @ 3.3 V
Current (Lithium Battery Version) Shutdown leakage current < 8 uA @ 4.0 V
Standby current < 30 mA @ 4.0 V
Laser on current < 50 mA @ 4.0 V
Continuous measurement mode < 80 mA @ 4.0 V
Communication Characteristics Baud Rate Auto baud rate version: Default 115200 bps, configurable (9600 to 115200 bps)
Fixed baud rate version: Default 115200 bps, customizable (4800, 9600, 19200, 38400, 115200 bps)
Communication Level TTL (3.3 V)
Supported Interfaces USART; RS232/RS485 (external level conversion module required)
Mechanical / Environmental Dimensions 42.00 mm x 17.10 mm x 7.06 mm (L x W x H)
Weight 4 g ± 0.5 g
Operating Temperature 0 to 40 C (32 to 104 F)
Storage Temperature -25 to 60 C (-13 to 140 F)
Additional dimensional callouts 0.669 inch; 1.614 inch; 42.00 mm; 17.1 mm; 7.06 mm; 16.50 mm; 25.50 mm; 10.50 mm; 6.00 mm; 9.50 mm; 7.60 mm; R1.05 mm
Compact size (marketing text) 41177 mm

Applications

  • Humanoid robots
  • Quadruped robots
  • Robotic arms
  • Exoskeletons
  • AGV vehicles
  • ARU robots
  • Product dimension measurement
  • Bridge and tunnel monitoring
  • Formation and settlement monitoring
  • Elevator monitoring
  • Mine monitoring
  • Smart production line

Manuals / Drawings

For integration support and pre-sales questions, contact [email protected] or visit https://rcdrone.top/.

Details

Yunshis SK40 LiDAR 40m laser distance module graphic with key specs and UART TTL 3.3V interface

Yunshis SK40 is a compact 40 m laser distance module designed for millimeter-level ranging and simple UART TTL (3.3 V) integration.

Angled close-up of the SK40 laser distance module PCB and optical housing for industrial-grade ranging

An industrial-grade build focused on high precision, low power consumption, and compact size for embedded robotics projects.

SK40 laser distance module promo with two module views and robotics application illustration

Single-point phase-shift ranging makes the SK40 a practical distance sensor for robotics and automation control loops.

Component callouts on SK40 module identifying laser transmitter, laser receiver, laser diode, and photoelectric chip

Key optical and sensing components include the laser transmitter/receiver, a high-quality laser diode, and a photoelectric chip.

SK40 module size drawing with dimensions labeled in inches alongside a front view of the assembled PCB module

A small footprint helps the module fit inside tight enclosures while keeping the optical head aligned for stable measurements.

Application scenarios collage for laser distance module: dimensions, bridge/tunnel, settlement, elevator, mine, production line

Common use cases include dimension measurement, infrastructure monitoring, elevator monitoring, mine monitoring, and smart production lines.

SK40 module structure dimension diagram with multiple orthographic views and millimeter measurements for mounting/layout

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