# IR Proximity Sensor, Digital, Diffuse Reflective, 2m Sensing Range, 5 VDC, 3 Pin Data Cable

![Product image](https://novapart.co/image/farnell:4308267/)

**URL**: https://novapart.co/products/SEN0381/ir-proximity-sensor-digital-diffuse-reflective-2m
**SKU**: SEN0381
**Manufacturer**: DFROBOT
**Price**: €9.6700
**Stock**: 10+

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Product Range | - |
| Sensing Method | Diffuse Reflective |
| Connection Method | 3 Pin Data Cable |
| Sensing Range Max | 2m |
| Sensor Output Type | Digital |
| Supply Voltage Max | 5V |
| Supply Voltage Min | - |
| Sensing Distance Max | 2m |
| Supply Voltage Dc Max | 5V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4308267/)

2023/10/24 13:59 

Digital IR Proximity Sensor(0-200cm) Wiki - DFRobot 

## SKU:SEN0381 (https://www.dfrobot.com/product-2130.html) 

Introduction Specification Board Overview Dimensional Drawing Tutorial FAQ More Documents 

(https://www.dfrobot.com/product-2130.html) 

## Introduction 

 

This is a digital IR Proximity Sensor with on-board button and indicator. It provides adjustable detection distance within 0 to 200cm and comes with real-time status feedback. Press down the button, then the indicator starts to flash, this time the detection distance can be adjusted. The sensor will auto detect and save the distance between it and obstacle ahead. In addition, this sensor is equipped with 3PIN data cable (digital signal output) that can be directly plugged into Arduino IO expansion board. The product can be widely used in applications like smart home, house security, intelligent detection and control, robot obstacle, and so on. 

The sensor is based on the principle of diffuse reflection of IR light on objects. When a person or object enters the sensing range in front of the sensor, the sensor immediately determines that there is induction, so as to control the output signal; after the person or object leaves the sensing range, it will judge that there is no induction, and stop signal output, by which intelligent control can be achieved. 

## Specification 

Power Supply: 5V 

https://wiki.dfrobot.com/Digital_IR_Proximity_Sensor_0_200cm_SKU_SEN0381 

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Digital IR Proximity Sensor(0-200cm) Wiki - DFRobot 

- Detection Distance: 0~200cm(adjustable) 

- Output: switch quantity(active-high) 

- Detection Angle: 30-40° coning angle 

Introduction 

Specification 

Board Overview 

Dimensional Drawing 

- Detection Mode: active 

- Operating Temperature: -10~60°C 

- Storage Temperature: -20°~70°C 

- Waterproof Performance: IP67 

Tutorial 

FAQ 

## Board Overview 

More Documents 

 

Num Label Description 1 Output Sensor Singal Output 2 VCC Positive 3 GND Negative 

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Digital IR Proximity Sensor(0-200cm) Wiki - DFRobot 

## Dimensional Drawing 

Introduction 

Specification 

Board Overview 

Dimensional Drawing 

Tutorial 

FAQ 

More Documents 

 

## Tutorial 

## Requirements 

## Hardware 

- DFRduino UNO R3 (https://www.dfrobot.com/product-838.html) (or similar) x 1 

Digital IR Proximity Sensor(0-200cm) x1 

## Software 

https://wiki.dfrobot.com/Digital_IR_Proximity_Sensor_0_200cm_SKU_SEN0381 

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Digital IR Proximity Sensor(0-200cm) Wiki - DFRobot 

## Arduino IDE (https://www.arduino.cc/en/Main/Software) 

Introduction 

Specification Board Overview 

Dimensional Drawing 

Tutorial 

FAQ 

More Documents 

 

https://wiki.dfrobot.com/Digital_IR_Proximity_Sensor_0_200cm_SKU_SEN0381 

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## Connection Diagram 

Introduction 

Specification Board Overview 

Dimensional Drawing 

Tutorial 

FAQ 

More Documents 

 

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https://wiki.dfrobot.com/Digital_IR_Proximity_Sensor_0_200cm_SKU_SEN0381 

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Digital IR Proximity Sensor(0-200cm) Wiki - DFRobot 

Introduction 

Specification 

Board Overview 

Dimensional Drawing 

Tutorial 

FAQ 

More Documents 

 

https://wiki.dfrobot.com/Digital_IR_Proximity_Sensor_0_200cm_SKU_SEN0381 

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## Sensor Detection Distance Adjustment 

Introduction 

Specification 

Board Overview 

Dimensional Drawing 

The sensor will start to work when powered on. Place an object of size 80x60cm at the 80cm(or smaller) in front of the sensor, adjust its detection distance as shown below: 

Press down the button, the red LED indicator begins to flash, then it enters auto detection distance adjustment mode. 

Tutorial 

FAQ 

More Documents 

 

https://wiki.dfrobot.com/Digital_IR_Proximity_Sensor_0_200cm_SKU_SEN0381 

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Digital IR Proximity Sensor(0-200cm) Wiki - DFRobot 

## Sample Code 

```
/*!
```

 

Introduction Specification Board Overview 

Dimensional Drawing Tutorial 

FAQ More Documents 

```
 * @File  infraredApproachSensor.ino
 * @brief  Detect the status of IO4 and print it in serial port
 * @copyright  Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
 * @licence  The MIT License (MIT)
 * @author  [liunian](nian.liu@dfrobot.com)
 * @version  V1.0
 * @date  2020-08-20
 */
int  OUT = 4;
int  i = 0;
void setup()
{
  Serial.begin(9600);
  pinMode(OUT, INPUT);
}
void loop()
{
   i = digitalRead (OUT);
   Serial.println(i);
   delay(5);
}
```

## Expected Results 

Read the status of IO4. When the sensor detected an object, serial print 1, otherwise, print 0. 

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Digital IR Proximity Sensor(0-200cm) Wiki - DFRobot 

Introduction 

Specification 

Board Overview 

Dimensional Drawing 

Tutorial 

FAQ 

More Documents 

 

https://wiki.dfrobot.com/Digital_IR_Proximity_Sensor_0_200cm_SKU_SEN0381 

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Digital IR Proximity Sensor(0-200cm) Wiki - DFRobot 

## FAQ 

Introduction 

Specification Board Overview 

For any questions, advice or cool ideas to share, please visit the DFRobot Forum (https://www.dfrobot.com/forum/). 

Dimensional Drawing 

Tutorial 

## More Documents 

FAQ 

More Documents 

> las DFshopping_car1.png[ G][e][t][D][igi][t][al][ IR P][rox][i][m][i][ty][ S][e][nsor][(0-200][c][m][)][(][h][ttps][://][www][.][df][ro][b][ot][.][c][om][/][pro][d][u][c][t][-] 2130.html) from DFRobot Store or DFRobot Distributor. (https://www.dfrobot.com/distributor) 

## Turn to the Top 

 

https://wiki.dfrobot.com/Digital_IR_Proximity_Sensor_0_200cm_SKU_SEN0381 

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## Links

- [View this product on Novapart](https://novapart.co/products/SEN0381/ir-proximity-sensor-digital-diffuse-reflective-2m)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/dfrobot/sen0381/ir-proximity-sensor-digital-2m/dp/4308267)
---

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