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The Hokuyo UTM-30LX-EW scanning laser rangefinder is a small, accurate, high-speed device for outdoor robotic applications. 

uses Ethernet interface for communication

can obtain measurement data in a wider field of view up to a distance of 30 meters with millimeter resolution. 

This device uses multi-echo technology for detection. 

allows for receiving multiple reflected waves per transmitted laser pulse in order to obtain usable measurement data. 

A very reliable object detection and 2-D mapping of the environment in all weather conditions.

  • Multi-echo detection for outdoor use

  • IP67 protection

  • Power Source - 12VDC  (+/-10%)

  • Scanning Range - 0.1 to 30 meters

  • Scanning Angle - 270º

  • Scanning Accuracy - 0.1 to 10 meters is +/-30mm, 10 to 30 meters is +/- 50mm

  • Scanning Time - 25msec/scan

  • 62mm x 62mm x 87mm (L x W x H)

See our blog posts related with UTM series of LiDARs. 

and here


  • Navigation and obstacle detection (Guide path planning for mobile robots and autonomous systems)

  • Object positioning (control docking processes of AGVs, AGCs)

  • Object Profiling (cargo containers, pallets for loading & unloading)

  • Object measurement and detection (volume of packages, pallets, flow measurement of bulk materials)

  • Area monitoring (building security and entrance ways)

Circuit Diagram


Hokuyo UTM-30LX-EW Control Signal


Hokuyo UTM-30LX-EW Specifications

Specification of Product: 
Light Source

Laser Semiconductor λ = 905nm Laser Class 1

UTM-30LX Supply Voltage

 12VDC ± 10%

Supply Current

 Max: 1A, Normal : 0.7A

Power Consumption

 Less than 8W


Detection Range


Detection Object

Guaranteed Range: 0.1 ~ 30m (White Kent Sheet) * ²

Maximum Range : 0.1 ~ 60m

Minimum detectable width at 10m : 130mm (Vary with distance)

UTM-30LX Accuracy

0.1 – 10m : ±30mm, 10 – 30m : ±50mm (White Kent Sheet) * ²

Under 3000lx : White Kent Sheet: ±30mm*¹ (0.1m to 10m)

Under 100000lx : White Kent Sheet: ±50mm*¹ (0.1m to 10m)


Measurement Resolution


Repeated Accuracy


0.1 – 10m : σ <10mm, 10 – 30m : σ <30mm (White Kent Sheet) * ²

Under 3000lx : σ = 10mm*¹ (White Kent Sheet up to 10m)

Under 100000lx : σ = 30mm*¹ (White Kent Sheet up to 10m)


Scan Angle



Angular Resolution

 0.25º (360°/1440

Scan Speed

25msMotor speed : 2400rpm


Ethernet 100BASE-TX(Auto-negotiation)


Synchronous Output 1- Point

LED Display

Green: Power supply.

Red: Normal Operation (Continuous), Malfunction (Blink)

Ambient Condition

(Temperature, Humidity)

-10ºC ~ +50ºC

Less than 85%RH (Without Dew, Frost)

Storage Temperature


Environmental Effect

Measured distance will be shorter than the actual distance under rain, snow and direct


Vibration Resistance

10 ~ 55Hz Double amplitude 1.5mm in each X, Y, Z axis for 2hrs.

55 ~ 200Hz 98m/s2 sweep of 2min in each X, Y, Z axis for 1hrs.

Impact Resistance

196m/s2 In each X, Y, Z axis 10 times.

Protective Structure

Optics: IP67 (Except Ethernet connector )

Insulation Resistance

10MΩ DC500V Megger


210g (Without cable)




External Dimension


62mm×62mm×87.5mm 


*¹ Under Standard Test Condition (Accuracy can not be guaranteed under direct sunlight.)

*² Indoor environment with less than 1000Lx.

Please perform necessary tests with the actual device in the working environment.

Use data filtering techniques to reduce the effect of water droplets when detecting objects under the rain.


Quality Reference Value

Viberation resistance during operation

10~150Hz 19.6m/s2 Sweep of 2min in each X,Y,Z axis for 30min

Impact resistance during operation

49m/s2 X, Y,Z axis 10 times

Angular Speed

2π/s (1Hz)

Angular Acceleration

π/2rad/ s2


5 Years (Varies with operating conditions)

Noise Level

Less than 25dB at 300 mm


FDA Approval (21 CFR part 1040.10 and 1040.11)

interface: Robot Cable 4 Pin

Color Funtion
Brown +12V
Blue 0V
Green Synchronous Output

Ethernet Cable

RJ-45 plug is attached to the cable (Length: 300mm)


Hokuyo UTM-30LX Usage

Hokuyo UTM-30LX a scanning laserrange finder from Hokuyo is used for mobile robot obstacle detection by scanning the area to the range of 30 meters.  It has a 270 degrees of scanning range and is suitable for fast moving robots.  This laser scanner can be used for outdoor environments.

Here you can find extensive details about the API and command line tools and commands to interface and communicate with UTM-30LX.

National Instruments have provided a plug and play driver which can be downloaded from here.

Researchers working with VTK (visualization toolkit) can directly acquire data in VTK format a wraper for Hokuyo interface can be downloaded from here.

Hokuyo has lanched a newer version of this laser scanner.  Following are the main differences:

  • Price (UTM-30LX-EW is for USD $5200 and UTM-30LX is for USD $4800).  The price may slightly vary due to exchange rates.
  • Eternet (Hokuyo UTM-30LX-EW) instead USB (Hokuyo UTM-30LX)
  • Multi-echo functionality which works great for outdoor atmopshers

There are many vendors which offer this device we offer the lowes price.  We also have a price match policy if you find a price lower than ours.  Let us know and we can instantly send you a quote.  We also have quanity discounts so call us or e-mail us and let us know about your requirements.

Hokuyo UTM-30LX-EW vs Hokuyo UXM-30LXH-EWA

Comparison of Hokuyo UTM-30LX-EW and Hokuyo UX-30LXH-EWA




Power supply DC12V DC10-30V
Detection range

30m (white paper)

10m (10% reflection black paper)

80m (white paper)

30m (10% relection black paper


(white paper, 100,000lx)

±50mm (1-10m) ±50mm (1-30m)
Detection angle 270 degrees 0.125 degrees
Scan speed 40hz 20Hz
Multi echo (for fog, rain & dust) Up to 3 echoes (distance and intensity) Up to 4 echoes (distance and intensity)
Heater Not available Yes
Protection rating IP67 IP67
Size 62x62x87.5 (mm) 125.5x124x150(mm)
Weight 300g 1200g


Laserscanner Hokuyo UTM-30LX and UTM-30LX-EW performance

Hokuyo UTM-30LX and Hokuyo UTM-30LX-EW are the most widely used LiDARs used for SLAM problem solving for mobile autonomous robots.  

With a full range of 30m both laserscanners provide an accuracy of 10mm.

Both UTM-30LX and UTM-30LX-EW have a scan angle of 270 degrees divided into 1080 measurement steps. 


Reflectivity considerations of UTM-30LX and UTM-30LX-EW Laserscanner:

The reflectivity of the LiDARs depend a lot on the surfaces.  We will consider the reflectivity of the hokuyo UTM series LiDAR from the distance of 1m.  The surfaces we are considering are 


a polished metal plate (mirror finish), 

a black painted metal plate and 

a plate covered with a black sheet of paper. 


Each surface was scanned 3000 times.


After scanning the surfaces over 3000 times we conclude that the distance measurement is more accurate for surfaces which are less reflective.  


The reflectivity also depends on the perpendicularity.  The intensity of laser beam for the reflective surfaces perpendicular to the laserscanners is higher, which gives a slightly different reading of distance measurement.  The error however is less than 1%.


Spatial orientation of the LiDARs on mobile robots.

The effect of sensors installation and orientation is very crucial as the LiDAR is mounted on a mobile robot.


The robot while moving encounters obstacles to either avoid or run over them or small steps.  The wind may also drift the position of the robot.  The robot orientation may sway in its pitch and roll angles.


Experiments on robotic platforms have shown that the sensor spatial orientation does  not have a significant effect on the precision of measurements


Importance of distance

The effect of the distance between the target and the LIDAR is very important since it determines the position and orientation of the LIDAR on the robot hence where on the conductors the LIDAR will point, i.e., how far in front the robot the LIDAR should scan.

The UTMs provide an accuracy of 10mm which as per our experience has conformed to the range specifications of the laserscanner