---
product_id: 510391161
title: "Radiolink SUI04/SU04 Ultrasonic Sensor Range Finder Obstacle Avoidance for Racing Drone, Robots, Quadcopter, Multi-Copter"
brand: "radiolink"
price: "₨1068"
currency: SCR
in_stock: true
url: https://www.desertcart.sc/products/510391161-radiolink-sui04-su04-ultrasonic-sensor-range-finder-obstacle-avoidance-racing
store_origin: SC
region: Seychelles
---

# 30ms ultra-low latency response 0.4cm ultra-high detection accuracy 8-direction autonomous obstacle avoidance Radiolink SUI04/SU04 Ultrasonic Sensor Range Finder Obstacle Avoidance for Racing Drone, Robots, Quadcopter, Multi-Copter

**Brand:** radiolink
**Price:** ₨1068
**Availability:** ✅ In Stock

## Summary

> 🛡️ Elevate your drone’s IQ with Radiolink’s SU04 – because every flight deserves flawless foresight!

## Quick Answers

- **What is this?** Radiolink SUI04/SU04 Ultrasonic Sensor Range Finder Obstacle Avoidance for Racing Drone, Robots, Quadcopter, Multi-Copter by radiolink
- **How much does it cost?** ₨1068 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/510391161-radiolink-sui04-su04-ultrasonic-sensor-range-finder-obstacle-avoidance-racing)

## Best For

- radiolink enthusiasts

## Why This Product

- Trusted radiolink brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-Terrain Safety:** Reliable in agriculture, rescue, and training environments with 40-450cm detection range
- • **Pinpoint Precision:** Detects obstacles as small as 0.4cm for flawless navigation
- • **Compact & Lightweight:** Weighs only 8g and fits seamlessly on any drone or robot
- • **Lightning-Fast Response:** 30ms latency ensures real-time obstacle avoidance without lag
- • **Versatile Compatibility:** Works effortlessly with PIXHAWK, MINPIX & TURBO PIX controllers via I2C/MAVLink

## Overview

The Radiolink SU04 Ultrasonic Sensor is a compact, lightweight obstacle avoidance device designed for drones, robots, and multi-copters. Featuring 0.4cm detection accuracy and ultra-low 30ms latency, it provides autonomous obstacle detection in 8 horizontal directions plus altitude hold. Compatible with popular flight controllers like PIXHAWK via I2C and MAVLink protocols, it ensures safer, smarter flights across agriculture, training, and rescue applications.

## Description

Radiolink is a high technology manufacturing company dedicated to researching, manufacturing and marketing of RC model radio transmitters. We are committed to providing customers with a high reliability and high performance product solution, as well as providing technical support and friendly after-sales service.How to connect: 1.Require your PIXHAWK is version 3.5 or later version when you will use automatic obstacle avoidance function.2.Use the 6pin wire connect the Ultrasonic Sensor SU04 insert to the TELEM1 or TELEM2 port of PIX.Please Note:1.Automatic obstacle avoidance function asks the firmware of PIXHAWK is version 3.5 or later version. 2.The flight controller cannot identify the detection distance when the sensor is far from the obstacle more than 450cm, it will altitude hold by barometer.3.PIXHAWK have to powered by LiPo battery, it cannot power by USB when you use this utrasonic sensor SU04.4.When you ready for the first flight, please make your drone at a lower speed to keep the safe flight.5.please reconnect the PIXHAWK and reopen the MP after all the parameters setup as all the above steps.Obstacle Sensor Specifications:Size: 20*22*19mmWeight: 8g(include wires)Input Voltage: 4.5~5.5V(No high voltage)Current: 18mA@5vTransmit Rate: 90mAWorking Temperature: -20°~80°Detection Range: 40cm~450cmDetection Accuracy: 0.4CMDetection Frequency: 40+-1.0KHz Output: I2C/Mavlink

## Features

- 【Obstacle Avoidance】: SU04 is a transmitting and receiving hybrid ultrasonic sensor, it will help helicopter, multirotor, airplane, car, and boat achieve autonomous obstacle avoidance in 8 directions horizontal, obstacle avoidance to the upward side and altitude hold to the downward.
- 【Small Size and Multifunction】: Single probe only 0.017Lb and 0.78*0.86*0.75in, easy to install on your drone. Obstacle avoidance function can protect your device when the beginner practice fly.
- 【Perfect for】: SU04 ultrasonic sensor can be used on Agriculture, Training, and rescue. Safety Guaranteed for Outdoors Operation and Training. Can work with Helicopter, Multirotor, Airplane, Car, and Boat.
- 【High Accuracy and Low Latency】: Support 0.4cm high detection accuracy, even the smallest obstacles can be accurately captured. Precise positioning without fear of obstacles. Extreme Fast Response, latency as low as 30ms.
- 【Compatible Mode】: SU04 is compatible with RadioLink flight controller PIXHAWK, MINPIX and TURBO PIX with the I2C and UART(MAVlink protocol) automatically identified.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Age Range | Adult |
| Color | Green |
| Size | Small |
| Style | ultrasonic sensor |
| Material Type | Plastic |
| Number of Items | 1 |
| Usage | agriculture, training, rescue |
| Included Components | ultrasonic sensor |
| Brand | Radiolink |
| Manufacturer | Radiolink |
| Item model number | SU04 |
| Product Dimensions | 1.98 x 1.91 x 2.18 cm; 8 g |
| ASIN | B0BTHLGRYF |

## Product Details

- **Brand:** Radiolink
- **Item dimensions L x W x H:** 20 x 19 x 22 millimeters
- **Material:** Plastic
- **Item weight:** 8 Grams
- **Style:** ultrasonic sensor

## Images

![Radiolink SUI04/SU04 Ultrasonic Sensor Range Finder Obstacle Avoidance for Racing Drone, Robots, Quadcopter, Multi-Copter - Image 1](https://m.media-amazon.com/images/I/61r1dsfY1XL.jpg)
![Radiolink SUI04/SU04 Ultrasonic Sensor Range Finder Obstacle Avoidance for Racing Drone, Robots, Quadcopter, Multi-Copter - Image 2](https://m.media-amazon.com/images/I/71PuPuvyIqL.jpg)
![Radiolink SUI04/SU04 Ultrasonic Sensor Range Finder Obstacle Avoidance for Racing Drone, Robots, Quadcopter, Multi-Copter - Image 3](https://m.media-amazon.com/images/I/616rah1-3VL.jpg)
![Radiolink SUI04/SU04 Ultrasonic Sensor Range Finder Obstacle Avoidance for Racing Drone, Robots, Quadcopter, Multi-Copter - Image 4](https://m.media-amazon.com/images/I/61pyXV7j-YL.jpg)
![Radiolink SUI04/SU04 Ultrasonic Sensor Range Finder Obstacle Avoidance for Racing Drone, Robots, Quadcopter, Multi-Copter - Image 5](https://m.media-amazon.com/images/I/61G-pdD4emL.jpg)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-03-17*