Overview
Yunshis SM Series laser distance sensor modules are available in three models—PLS-SM10, PLS-SM30, and PLS-SM60—with measurement ranges of 0.08–10 m, 0.08–30 m, and 0.08–60 m respectively. They provide 0.1 mm resolution, 1 mm repeatability, and accuracy of ±1 mm + D*(1/10000), with a measurement rate of 1–5 Hz and minimum response time of 0.2 s (Max).
Measurement performance depends on target reflectivity and environment: indoors up to 60 m for targets with >=80% reflectivity, and up to 12 m for black paper cards (low reflectivity). Outdoors, due to sunlight interference, distance is up to 30 m for targets with >=80% reflectivity, and up to 60 m when using a dedicated reflector.
Key Features
- Laser lifetime: > 50,000 hours (also specified as 50,000 hours)
- Ambient light immunity: withstands outdoor sunlight up to 10kLux
- Light source: red visible laser, wavelength 630–660 nm
- Laser safety class: Class 1 (IEC 60825-1:2014, EN 60825-1:2014)
- Typical spot diameter: Phi 2 cm (at 10 m)
- Output interfaces / signals: RS485 / 4–20 mA / 0–5 V / TTL
- Power supply: DC 7–28 V; power consumption: < 2 W
- Housing: Aluminum Alloy; lens: PMMA
- Protection rating: IP65 (dustproof & waterproof)
Specifications
| Parameter | PLS-SM10 | PLS-SM30 | PLS-SM60 |
|---|---|---|---|
| Measurement Range | 0.08 ~ 10 m | 0.08 ~ 30 m | 0.08 ~ 60 m |
| Resolution | 0.1 mm | ||
| Repeatability | 1 mm | ||
| Accuracy | ±1 mm + D*(1/10000) | ||
| Measurement Rate / Frame Rate | 1 - 5 Hz | ||
| Response Time | Min. 0.2s (Max) | ||
| Target Object | Natural surface of static/dynamic targets or dedicated reflector | ||
| Ambient Light Immunity | Withstands outdoor sunlight up to 10kLux | ||
| Light Source | Red visible laser, wavelength 630~660 nm | ||
| Laser Safety Class | Class 1 (IEC 60825-1:2014, EN 60825-1:2014) | ||
| Typical Spot Diameter | Phi 2 cm (at 10m) | ||
| Laser Lifespan | 50000 hours | ||
| Output Signals | RS485 / 4-20mA / 0-5V / TTL | ||
| Power Supply | DC 7 ~ 28 V | ||
| Power Consumption | < 2 W | ||
| Housing Material | Aluminum Alloy | ||
| Lens Material | PMMA | ||
| Dimensions | 77.5 x 42 x 42 mm | ||
| IP Rating | IP65 | ||
| Weight | 270 g | ||
| Operating Temperature | -10 ~ +40 C | ||
| Mounting | Bottom: M2.5*4 screw holes, Top: M2.5*4 screw holes | ||
Wiring Diagram
| Wire Color | Signal |
|---|---|
| Red | Power (+) |
| Black | Power (-) |
| Brown | RS485A |
| White | RS485B |
| Brown | Analog (+) |
| Gray | Analog (-) |
Applications
- Humanoid robots
- Robotic arms
- Exoskeletons
- Quadruped robots
- AGV vehicles
- ARU robots
- Gimbal cameras
- Thermal imaging systems
- Night vision devices
- Unmanned aerial vehicles (UAV)
- Surveillance camera systems
- Electro-optical pods
- Optical sight systems
Manuals
Yunshis SM Series Laser Distance Sensor - Drawing (PDF)
Video
For integration questions (RS485/analog output selection, wiring, or model choice), contact support at https://rcdrone.top/ or email [email protected].
Details

Built for industrial deployments, the SM Series combines a compact metal housing with long laser lifetime and stable measurement performance.

Choose 10 m, 30 m, or 60 m measuring range, with 0.1 mm resolution and up to 1–5 Hz measurement rate for continuous distance feedback.


A practical fit for robotics and EO/IR platforms where reliable distance measurement supports aiming, stabilization, and scene awareness.

Wiring supports both RS485 communication and analog output, with clearly color-coded leads for fast integration.

Compact 77.5 × 42 × 42 mm form factor with M2.5 mounting points on the top and bottom for flexible installation.
