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Photoelectric Sensors

Photoelectric Sensors Manufacturer

Employing advanced technology and offering a wide range of options to choose from, Omch is your premier photoelectric sensor manufacturer in China. Enhance the efficiency and safety of any industrial automation setup with our perfect photoelectric sensor solutions tailored to match your specific market and industry demands.

Extended Detection Range

Broad Object Detection Capabilities

High Resolution

Extended Lifespan

Also known as photoelectric sensors, diffuse sensors scan objects through the emission and reception of light – an essential part of effective object recognition.

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More of an accessory than a detection tool, optical amplifiers enhance the optical signal in a fiber optic line and are used in fiber optic communications.

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A staple in color standard detection, color mark sensors are used to detect a specific color or shade of a part compared to the established benchmarks.

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Inductive Proximity Sensors Manufacturer

Discover world-class inductive proximity sensor solutions that Omch has in store in support of various automation applications. We’re a global inductive proximity sensor manufacturer driven to deliver high-quality, reliable, and technically advanced industrial automation products for your customers. Expect no less than efficient and top-performing inductive proximity sensors in every purchase.

Reliable Non-Contact Sensing

Sensing Distance: 2mm – 30mm

Quick and Precise Object Detection

Installation: flush and non-flush

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Features of Inductive Proximity Sensors

Non-Contact Detection

The ability to scan objects without requiring physical contact minimizes wear and tear on the products.

High Precision

Our inductive proximity sensors' impressive precision and high repeatability make them the ideal scanners for object positioning.

Long Life

Thanks to their superior construction and non-contact output, our sensors have a longer service life and require minimal maintenance or repair.

Short Response Time

The high sensitivity and quick response of these inductive proximity sensors makes them suitable for vehicle collision prevention, slewing body stops, and other quick-response tasks.

Usable in Severe Environment

Our sensors have IP67 protection and oil-resistant construction, making them reliable sensors that will work even in adverse conditions and contact with water.

High Reliability

Inductive proximity sensors from Omch are globally known for their durability and stable performance – working flawlessly in harsh environments.

01 What are Inductive Proximity Sensors?

This inductive proximity switch, alternatively referred to as a non-contact proximity switch, serves as an excellent electronic proximity sensor. Primarily used in object detection in automation processing, inductive proximity sensors are non-contact devices that emit electromagnetic fields and detect metallic objects within products that pass through. They’re well-known as reliable and valuable pieces in various industries, seeing great use in the global market for their reliability and durability.

Inductive sensor enclosures are available in two varieties: shielded proximity sensors and unshielded versions. They can be installed either flush (embedded) in metal or non-flush (non-embedded).

02 How it Works

Inductive proximity sensors, also known as inductive sensors, work through the principle of electromagnetism – where an electromagnetic field is generated within the proximity of the sensor. When a metallic object hits the sensor, it triggers the sensor and detects the presence of the piece on the product. Inductive proximity sensors see strong adoption for object detection and position control.

03 Applications of Inductive Proximity Sensors

The inductive proximity switch finds extensive applications in machine tools, metallurgy, chemical, textile, and printing industries. It serves various roles in automatic control systems, including limit sensing, counting, precise positioning, and automatic protection. Notable characteristics of the inductive proximity sensor/switch include its long lifespan, dependable performance, high precision in repeat positioning, absence of mechanical wear, spark, or noise, and robust resistance to vibrations.

Features of Photoelectric Sensors

Non-Contact Detection

With photoelectric sensors requiring no contact with products for scanning, there’s little to no damage to the products while improving processing timeframes.

High Precision

All photoelectric sensors are delicately calibrated to provide pinpoint precision in object detection and measurement, resulting in reliable and consistent output.

Long-Range Detection

Thanks to the extended range of Omch’s photoelectric sensors, production lines can cover more area and complete more tasks faster.

Fast Response Time

Reduced delays in information gathering and management of moving parts. Instantaneous information transmission between transmitters and receivers produces lightning-fast responses and precision results.

Color Identification

The object's reflectance or absorption of light is influenced by the wavelength of the emitted light and the object's color. This characteristic enables color detection.


The photoelectric sensors we offer are easy to calibrate and adjust, so they can be used in different applications while achieving top results every time.

No Sensing Object Restrictions

These sensors detect objects by blocking or reflecting light, offering versatility beyond metal detection, suitable for various materials like glass, plastic, wood, and liquids.

Ease of Installation

We manufacture our photoelectric sensors to be user-friendly and easy to install, requiring minimal assembly to achieve the expected results.

What are Photoelectric Sensors ?

Photoelectric sensor is a type of sensor that converts changes in light intensity between the transmitting and receiving ends into changes in current for the purpose of detection.

The photoelectric sensors can be used in a wide range of applications. This new generation of optoelectronic switching devices utilizes integrated circuit technology and SMT surface mounting processes, offering features such as time delay, signal broadening, external synchronization, anti-interference capabilities, high reliability, stable operation in various conditions, self-diagnostic functions, and more.

This innovative photoelectric sensor is a pulse-modulated active photoelectric detection system. It utilizes a cold light source with options including infrared, red, green, and blue light. It can non-invasively and rapidly detect and control various states and actions of solid, liquid, transparent, black, soft, and smoky substances, among others. It boasts a small size, numerous functions, long lifespan, high precision, rapid response time, extended detection range, and robust resistance to light, electrical, and magnetic interference.

Types of Photoelectric Sensors

Depending on the task requirements, certain photoelectric sensors can complete them with precision, accuracy and reliable results. While following the same principle, each photoelectric sensor type, like thru-beam or retro-reflective sensors, has unique advantages that make them a great fit for applications.

Numerous varieties of photoelectric switches exist, and as a renowned photoelectric sensors company with expertise in this field, our engineers continuously refine these switches to improve their overall performance. Our objective is to deliver premium photoelectric switch products to a broader range of businesses.

How it Works

Photoelectric sensors work by emitting light from a transmitter to a receiver. When an object interrupts this light beam, the receiver detects the change in light intensity and triggers an output signal. This signal indicates the presence or absence of the object. These sensors are versatile, with applications in object detection, counting, and automation.

Photoelectric proximity sensors come in various types, including through-beam, retro-reflective, and diffuse, catering to different needs. Photoelectric sensors are widely used in industrial automation and robotics for their non-contact object detection capabilities.

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Diffuse Sensors Working Principle

Diffuse Sensors Working Principle

The electromagnetic radiation that diffuse sensors emit—typically infrared light—is picked up by surrounding objects through reflection. Depending on its characteristics, an object reflects different amounts of radiation when it comes within the diffuse sensor’s range.


The intensity of this reflection is measured by a photodetector in the sensor. The sensor registers the presence of an object and produces an output signal if it rises above a predetermined threshold. Utilising the intensity of reflected radiation, certain models can calculate an object’s distance. These sensors are used for object detection, product counting, and automation. They excel in non-contact situations where accurate object detection is essential but physical contact with the objects is not possible.

Retro-reflective Sensors Working Principle

Retroreflective sensors emit light toward a target object. The light is reflected back to the sensor’s receiver by special retroreflective material on the target. The sensor recognizes when something blocks the reflected light and sends out a signal as a result.


These sensors are excellent at detecting items regardless of their color or texture, which makes them suitable for many different applications like conveyor systems and automatic doors. Due to the focused reflection, they are especially useful for long-range sensing. They also reduce false detections and provide trustworthy object detection methods.

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Retro-reflective Sensors Working Principle

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Thru Beam Sensors Working Principle

Thru Beam Sensors Working Principle

The transmitter and receiver in a through-beam sensor work together. A constant light beam is directed at the receiver from the transmitter. The receiver’s photocell receives the light beam directly when there is nothing in the way, and the sensor recognises this as a clear path.


The sensor detects the blockage and produces an output signal when an object blocks the light beam and enters the area between the transmitter and receiver. In applications like security systems, conveyor control, and presence detection, thru-beam sensors are extremely reliable for precise, long-range object detection.

These sensors are excellent at detecting items regardless of their color or texture, which makes them suitable for many different applications like conveyor systems and automatic doors. Due to the focused reflection, they are especially useful for long-range sensing. They also reduce false detections and provide trustworthy object detection methods.

Applications of Photoelectric Sensors

Increasing demand for precision measuring and detection tools has opened the door for the adoption of more photoelectric switch sensors in more industries. Some key applications include product detection on conveyor belts, product placement in packaging lines, and object detection in security systems, to name a few.

As an experienced photoelectric sensor supplier, we have assisted numerous businesses in almost hundreds of applications, enhancing their automation processes and doubling their earnings.

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