Best Ultrasonic Proximity Sensors of 2025

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Ultrasonic proximity sensors are a type of sensor that uses sound waves to detect nearby objects. These sensors emit high-frequency sound waves that bounce off of objects and return to the sensor. By measuring the time it takes for the sound waves to return, the sensor can determine the distance to the object. Ultrasonic proximity sensors are commonly used in robotics, automation, and security systems. They are versatile and can be used in a variety of applications, from detecting the presence of objects to measuring the level of liquids in a container.
At a Glance: Our Top Picks
Top 10 Ultrasonic Proximity Sensors
MakerHawk HC-SR04T Ultrasonic Sensor
The MakerHawk Ultrasonic Sensor is a compact and user-friendly device perfect for your Arduino projects. It operates on low voltage, ensuring minimal power consumption, which is great for energy-efficient setups. You can expect high accuracy in distance measurements, with a resolution of about 0.5cm and a range of up to 5 meters, making it ideal for precise applications. Additionally, its strong anti-interference features allow it to perform reliably in challenging environments, ensuring consistent results regardless of conditions.
ELEGOO HC-SR04 Ultrasonic Distance Sensor
The ELEGOO HC-SR04 Ultrasonic Distance Sensor is a set of 5 ultrasonic sensors consisting of ultrasonic transmitter, receiver, and control circuit. It can measure distance ranging from 2cm to 500cm with a resolution of 0.3cm. It operates on a 5V DC power supply and consumes less than 2mA. The sensors are compatible with Arduino UNO MEGA Nano Robot XBee ZigBee. The package comes with a little gift.
HiLetgo Ultrasonic Distance Sensor
The HiLetgo 5pcs HC-SR04 Ultrasonic Module Distance Sensor sends and receives 40 kHz pulse signals to detect the distance of objects. It outputs a high-level signal when it detects a signal back and the duration of the signal is the time from sending ultrasonic to returning. It can detect distances using high-level time velocity and operates on a 5V DC power supply. The sensor is equipped with an anti-reverse pin socket and comes with a 4-pin anti-reverse cable for convenient wiring. The sensor is powered by the MCU STC15W104, eliminating the need for an external crystal oscillator.
HiLetgo 2pcs Ultrasonic Module for Arduino
The HiLetgo 2pcs Ultrasonic Module is a waterproof sensor suitable for outdoor applications like car reversing sensors, security alarms, and industrial inspection. Its wire enclosed waterproof probe is ideal for wet, harsh measurement occasions. With working voltage of DC 5V, it has a working range of 25cm-4M, a detecting angle of 70 degrees, and a working frequency of 40KHZ. It has a variety of modes that can be modified manually, making it suitable for testing and teaching experiments in different occasions. Applications include horizontal distance measurement, obstacle avoidance, automatic control, traffic control, security, and industrial control.
EPLZON HC-SR04 Ultrasonic Sensor
The EPLZON Ultrasonic Sensor is an efficient tool for measuring distances. It operates by sending out high-level signals to detect the return of pulse signals, making it ideal for various projects. With a detection range from 2 cm to 500 cm, you can rely on its precision of up to 0.12 inches, ensuring accurate measurements. Its compact size and low power requirement of just 5V DC and less than 2mA quiescent current make it easy to integrate into your devices. This sensor is perfect for enhancing your Arduino, robot, or other electronic projects.
JSN-SR04T Ultrasonic Distance Measuring Sensor Transducer
The JSN-SR04T ultrasonic distance measuring module has a 25cm-4M working range and a 75-degree detecting angle. It is integrated with a sealed waterproof stripline probe, making it suitable for wet and harsh measurement occasions. The module is small, easy to use, and has high accuracy, low voltage, and low power consumption. It has a variety of modes that can be modified manually, making it suitable for different testing and teaching occasions. The module is widely used in horizontal distance ranging, obstacle avoidance, car reversing sensors, and artificial intelligence teaching and research.
WWZMDiB JSN-SR04T Ultrasonic Sensor
The WWZMDiB Ultrasonic Sensor features a waterproof design, making it ideal for outdoor use. With a working voltage of DC 3-5.5V, it is easy to integrate into various projects. This sensor has a measuring range of 25cm to 4 meters, allowing you to accurately gauge distances in a variety of applications. Additionally, it offers a detecting range of 20cm to 600cm with a precision of 2mm, ensuring reliable measurements. Whether you're working on obstacle avoidance or security systems, this sensor brings convenience and accuracy to your projects.
EC Buying HC-SR04 Ultrasonic Sensor
The EC Buying Ultrasonic Sensor is designed for precise distance measurement, ranging from 2cm to 500cm with a fine resolution of 0.3cm. This feature allows you to achieve accurate readings for various applications, whether you're working on robotics or automation projects. Connecting the sensor is straightforward, thanks to its VCC, trig, echo, and GND pins, making integration easy for you. Additionally, its low power consumption of less than 2mA is perfect for battery-operated devices, ensuring you can use it without draining your power source quickly. With reliable performance, you can trust this sensor for consistent results in your projects.
HiLetgo HC-SR04 Ultrasonic Sensor
The HiLetgo Ultrasonic Sensor is a precise distance measuring module designed to make your projects easier. It features an advanced STM8S103 microprocessor that enhances performance, ensuring accurate readings. The built-in digital tube display allows you to easily view measurement results, making it user-friendly. With a working voltage of just 5V, this sensor can effectively measure distances ranging from 3 to 400 centimeters, providing versatility for various applications. Whether you're working on robotics, automation, or simple distance detection, this sensor is a reliable choice that simplifies your tasks.
JESSINIE JSN-SR20-Y1 Ultrasonic Sensor
The JESSINIE Ultrasonic Sensor offers a non-contact distance measurement capability ranging from 2cm to 500cm, making it ideal for various applications where safety and precision are essential. This module is built with high-quality components, ensuring stability and reliability, so you can trust it to perform consistently over time. Its industrial-grade waterproof and dustproof design means it can adapt to challenging environments, giving you peace of mind in outdoor or rugged settings. Additionally, with multiple output modes, this sensor is easy to use and is compatible with most MCUs, including the popular HC-SR04 module.
Frequently Asked Questions (FAQs)
1. What are the disadvantages of using ultrasonic sensors?
Some disadvantages of using ultrasonic sensors include limited testing distance, inaccurate readings, and inflexible scanning methods. It's important to consider these limitations when choosing to use ultrasonic proximity sensors.
2. How accurate are ultrasonic proximity sensors?
Ultrasonic proximity sensors can achieve an accuracy of up to 1% of the set measuring range. This means that objects can be detected with an accuracy of 1 mm at a distance of 10 cm. However, it's crucial to emit the sound at a fixed frequency for reliable operation.
3. Can ultrasonic sensors penetrate walls?
Yes, ultrasonic sensors, as a type of mechanical wave, can penetrate metal walls. However, their ability to penetrate other materials may vary, and it's important to consider the properties of the specific material in question.
4. What should I avoid with ultrasonic level sensors?
When using ultrasonic level sensors, it's important to avoid inappropriate applications and soft or sound-absorbent materials, such as powders or foamy surfaces, as they can significantly reduce sensing ranges. Additionally, areas with heavy suspended dust can attenuate the sensor's signal.
5. How far away can the ultrasonic sensor detect objects?
Ultrasonic sensors have a limited range and can typically detect objects up to about 70 feet (21 meters) away. However, it's important to note that they may not work as accurately in vapor environments that change the speed of sound from that of air.
During our ultrasonic proximity sensor research, we found 24 ultrasonic proximity sensor products and shortlisted 10 quality products. We collected and analyzed 6,165 customer reviews through our big data system to write the ultrasonic proximity sensors list. We found that most customers choose ultrasonic proximity sensors with an average price of $12.31.
The ultrasonic proximity sensors are available for purchase. We have researched hundreds of brands and picked the top brands of ultrasonic proximity sensors, including MakerHawk, ELEGOO, HiLetgo, EPLZON, Atnsinc. The seller of top 1 product has received honest feedback from 146 consumers with an average rating of 4.8.

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.