Best Capacitive Proximity Sensors of 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.
Capacitive proximity sensors are electronic devices that can detect the presence or absence of an object without physical contact. These sensors work by measuring changes in capacitance, or the ability to store an electrical charge, between the sensor and the object being detected. These sensors are commonly used in industrial and manufacturing environments to detect the presence of materials on production lines or to control automated machinery. Capacitive proximity sensors are also used in consumer electronics, such as smartphones and tablets, to detect the presence of a user's finger and trigger touch screen functions.
At a Glance: Our Top Picks
Top 10 Capacitive Proximity Sensors
Baomain Capacitive Proximity Sensor Switch
This capacitive proximity sensor switch, model LJC12A3-5-Z/BY, is a cylinder type switch that detects metal or nonmetal materials within a range of 1-5mm. It operates on a DC 10-30V supply voltage and has a current output of 200mA. With an external material of plastic and alloy, it weighs 60g and is suitable for use in temperatures ranging from -25 to +65 Celsius.
Baomain LJC18A3-B-J Capacitive Sensor
The Baomain Proximity Sensor is a versatile device designed to detect both metal and nonmetal objects within a range of 1 to 10mm. With a robust supply voltage of AC 90-250V, this sensor ensures reliable performance in various environments. Its compact cylindrical shape, measuring 18mm in diameter, allows for easy installation in tight spaces. Operating efficiently in temperatures from -25 to +65 degrees Celsius, it is suitable for a wide range of applications, providing you with the peace of mind that your detection needs are met, regardless of conditions.
Taiss LJC18A3-H-Z/BX Proximity Switch
The Taiss LJC18A3-H-Z/BX Proximity Switch is a highly efficient and reliable capacitance proximity sensor switch. With its NPN NO (Normally Open) output type and 1-10mm detecting distance, this switch is perfect for detecting metal or nonmetal objects. Its DC 6-36V supply voltage and 300mA current output ensure optimal performance. The switch is easy to install and adjust, ensuring a quick and hassle-free setup. Made from durable plastic and alloy materials, this switch is built to last. With its compact size and lightweight design, it can be easily integrated into various applications. Overall, the Taiss Proximity Switch offers excellent functionality and convenience, making it a top choice for both industrial and personal use.
Heschen M30 Capacitive Proximity Sensor Switch
The Heschen M30 Capacitive Proximity Sensor Switch, also known as the Heschen M30 Sensor, is a versatile and reliable proximity sensor that can detect any dielectric object. With a mounting hole diameter of 30mm and a detecting distance of 20mm±10%, this sensor is suitable for a wide range of applications. Its NPN Normally Open output type and non-shield design make it easy to integrate into different systems. The sensor has a current output of 200mA and operates at a working voltage of 10-30 VDC, ensuring stable and accurate detection. Whether you need to detect objects in industrial automation, robotics, or other applications, the Heschen M30 Sensor provides convenience and reliability.
Baomain Capacitive Proximity Sensor Switch
The Baomain Capacitive Proximity Sensor Switch is a cylinder-type switch that can detect metal or non-metal materials within a 1-10mm range using capacitance sensor technology. It has a 2-wire AC setup and an output type of AC NO (Normal Open), with a supply voltage of AC 90-250V and a current output of 400mA. This switch is made with plastic and alloy material, and can operate in temperatures ranging from -25 to +65 Celsius. It comes with a 120cm cable and weighs 114g.
Heschen M18 Proximity Sensor
The Heschen M18 Proximity Sensor is a high-quality sensor that can detect any dielectric object. With its 18mm mounting hole diameter and 10mm±10% detecting distance, it provides accurate and reliable detection. The PNP Normally Open(NO) output type ensures seamless integration with other devices. The 200mA current output and 10-30 VDC working voltage make it suitable for various applications. Whether you need to detect objects in industrial settings or automate processes, this sensor is the perfect choice. Its non-shield type design adds convenience during installation. The Heschen M18 Proximity Sensor offers reliable performance and versatility, making it a valuable addition to any setup.
Wengart LJC18A3-B-Z Capacitive Sensor
The Wengart Capacitive Sensor boasts impressive performance and high sensitivity, allowing you to easily detect fast-moving targets. Its non-contact operation means you won't have to worry about damaging the surface of the objects you’re sensing, extending the sensor's lifespan. Additionally, this sensor operates effectively without being affected by external electromagnetic interference, making it reliable in various environments. Its compact design simplifies installation and integration into your projects, ensuring you can set it up with ease. Overall, this sensor enhances your capabilities while providing convenience and efficiency.
Baomain LJC18A3-B-Z/BX Capacitive Sensor
The Baomain Capacitive Sensor is a versatile device designed to detect both metal and non-metal objects within a range of 1 to 10 mm. Its NPN normally open output allows for seamless integration into various applications, providing reliable performance. With a wide supply voltage range of DC 10-30V and a current output of 200mA, it ensures stable operation across different environments. Additionally, the sensor operates effectively in temperatures from -25 to +65 degrees Celsius, making it suitable for diverse conditions, enhancing your project’s reliability.
Heschen M18 Capacitive Proximity Sensor
The Heschen M18 Capacitive Proximity Sensor is a high-quality sensor designed for detecting objects. With a mounting hole diameter of 18mm and a cable length of 150cm, it offers easy installation and flexibility in positioning. The sensor has a detecting distance of 10mm±10% and a set distance of 0-8mm, allowing for accurate detection of objects within the specified range. Its NPN normally open(NO) output type ensures reliable performance. The sensor operates at a working voltage of 10-30VDC and has a current output of 200mA. With the ability to detect any dielectric object, this sensor is suitable for a wide range of applications. Whether you need to detect objects in industrial settings or perform proximity sensing tasks, the Heschen M18 Capacitive Proximity Sensor provides convenience and accuracy.
Heschen M30 Capacitive Proximity Sensor
The Heschen M30 Sensor is designed for reliable detection of dielectric materials within a range of 1 to 15mm. With a mounting hole diameter of 30mm, it is easy to install in various applications. Operating on a voltage range of 10 to 30 VDC, it provides flexibility for different setups. Its PNP normally open output type allows for straightforward integration into existing systems, making it a convenient choice for users looking to enhance their automation processes.
Frequently Asked Questions (FAQs)
1. How does a capacitive proximity sensor work?
Capacitive proximity sensors detect changes in capacitance between the sensor and an object. This is done by measuring the amount of capacitance generated between the two. Factors like distance and object size affect capacitance, allowing the sensor to detect any changes.
2. Where are capacitive proximity sensors used?
Capacitive proximity sensors are commonly used in industrial settings for measuring an object's position, displacement, or proximity. They find applications in various manufacturing plant control systems.
3. What is the maximum distance for a capacitive proximity sensor?
Typically, capacitive proximity sensors have a sensing range of a few millimeters up to about 1 inch (25 mm). Some sensors have an extended range of up to 2 inches. These sensors excel in applications where they need to detect objects through materials like bags, bins, or boxes.
4. What can trigger a capacitive sensor?
Capacitive sensors can detect both conductive and non-conductive targets. Conductive targets include metals, water, blood, acids, bases, and saltwater. These targets have higher capacitance. The dielectric strength of the target is not relevant.
5. What can a capacitive sensor not detect?
Capacitive sensors may not detect small amounts of media if the dielectric constant of the media is lower than that of the container holding it.
6. What kind of object can a capacitive sensor detect?
Capacitive sensors can detect various solid materials such as metals, plastics, wood, paper, glass, and cloth. They can also detect liquids like water, oil, and paint. Some capacitive sensors can even detect materials inside nonmetallic containers.
7. What is the most common use of capacitive sensors?
Capacitive sensors have a wide range of applications. They are commonly used for position or displacement detection, proximity sensing, fluid level measurement, humidity sensing, and acceleration monitoring. Capacitive sensors can also be used as replacements for mechanical buttons.
8. What are the disadvantages of capacitive proximity sensors?
Capacitive proximity sensors have a few disadvantages. They can be affected by temperature and humidity. Designing them can be challenging. The operating range may be limited. Compared to inductive sensors, capacitive sensors are less accurate. They can only detect metallic targets and are easily triggered, which can cause problems.
9. What materials can a capacitive sensor detect?
Capacitive sensors can detect a variety of solid materials, including metals, plastics, wood, paper, glass, and cloth. They can also detect liquids like water, oil, and paint.
During our capacitive proximity sensor research, we found 24 capacitive proximity sensor products and shortlisted 10 quality products. We collected and analyzed 4,253 customer reviews through our big data system to write the capacitive proximity sensors list. We found that most customers choose capacitive proximity sensors with an average price of $9.39.
The capacitive proximity sensors are available for purchase. We have researched hundreds of brands and picked the top brands of capacitive proximity sensors, including Baomain, Taiss, Heschen, WENGART. The seller of top 1 product has received honest feedback from 754 consumers with an average rating of 4.9.

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.