20m Range Laser Sensor for Distance Measurement

Short Description:

Based on the principle of phase laser measurement,Seakada developed a single point ranging laser, which can achieve the measurement distance of 20m and detection accuracy of mm level. It has stable and good ranging performance for different reflectivity measurements and environmental light at different temperatures.

As an industry leader of laser ranging sensors in China, Seakada has more than ten years of experience in laser sensor design, development and manufacturing, and provides customers with various special laser ranging sensor products and solutions. Seakada products cover laser phase sensor, laser pulse sensor, laser high frequency sensor and customized services.

Product Detail

Product Tags

Product Introduction

Single point laser distance sensor use a visible laser point, it is easy to aim at the object being measured. Laser distance sensor S91 series with smallest size 63*30*12mm,light weight about 20.5g, measuring range can be 20m, 1mm high accuracy. Small volume, easy installation. Using the principle of phase measuring, high precision, stable and high sensitivity measurement. UART serial port output, support secondary development data communication.Laser distance module supports data communication via TTL,RS232,RS485,USB,BeagleBoard,Renesas controller,and also can be applied to Arduino,Raspberry Pi,UDOO,MCU etc.


1.high measurement accuracy
2.fast measurement speed
3.simple installation and operation

1. laser sensor for object detection
2. arduino laser distance


Model S91-20
Measuring Range 0.03~20m
Measuring Accuracy ±1mm
Laser Grade Class 2
Laser Type 620~690nm,<1mW
Working Voltage 6~32V
Measuring Time 0.4~4s
Frequency 3Hz
Size 63*30*12mm
Weight 20.5g
Communication Mode Serial Communication, UART
Interface RS485(TTL/USB/RS232/ Bluetooth can be customized)
Working Temperature 0~40℃(Wide temperature -10 ℃ ~ 50 ℃ can be customized)
Storage Temperature -25℃-~60℃

1. Under bad measure condition, like environment with strong light or the diffuse reflectance of measuring point over-high or low, the accuracy would have bigger amount of error: ±1 mm± 50PPM.
2. Under strong light or bad diffuse reflectance of target, please use a reflection board
3. Operating temperature -10 ℃~50 ℃ can be customized

Testing Software

How to Testing the laser ranging sensor?
We can provide supporting test software to facilitate users to detect whether the laser distance sensor is working normally.
Please contact us for download the serial port test software.
After the cables and USB or other communication converter are correctly connected, please follow the below steps:
1, Open the test software;
2, Select the correct port;
3, set the correct baud rate;
4, Open the port;
5, Click measure when the single measurement is required;
6,Click “ConMeaure” when Continuous measurement is needed, excite “StopMeasure” to exit continuous measure.
The real time distance record that has been parsed can be seen in the date record box on right.

3. raspberry pi laser distance sensor


Laser ranging sensor is a high-precision ranging sensor developed by Seakada.It has been widely used in home improvement measurement, industrial control, Robot and other fields.


1. Does the laser measurement sensor support wireless connection?
Seakada ranging sensor itself has no wireless function, so if the customer needs to use the PC to read the sensor measurement data wirelessly, an external development board and its wireless communication module are required.
2. Can the laser ranging sensor be used with Arduino or Raspberry Pi?
Yes. Seakada laser distance sensor uses serial communication protocol, as long as it is a control board that supports serial communication, it can be used for communication.
3. Can the industrial laser ranging sensor be connected with microcontrollers such as Arduino and Raspberry pi?
Seakada laser measuring sensor can interface with microcontrollers like Arduino and Raspberry pi.

  • Previous:
  • Next: