Best Photomicrosensors of 2026

Brian Howie Avatar
Brian Howie
Last Updated: Jan 8, 2026

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Photomicrosensors are an essential component in various industrial and scientific applications. These sensors are designed to detect and measure small changes in light intensity, making them ideal for use in precision instruments and equipment. They are commonly used in the manufacturing of electronic devices, medical equipment, and scientific instruments. Photomicrosensors are highly sensitive and can detect even the slightest changes in light, making them an essential tool for researchers and scientists. With their high accuracy and reliability, photomicrosensors are an essential component in many industries.

At a Glance: Our Top Picks

uxcell Photodiodes Light Sensitive Sensors Cover #TOP 1
uxcell Photodiodes Light Sensitive Sensors
ftb score rating icon 9.8
DIYables 50pcs LDR Light Sensors Cover #TOP 2
DIYables 50pcs LDR Light Sensors
ftb score rating icon 9.7
Taiss BEN5M-MFR Photoelectric Beam Sensor Cover #TOP 3
Taiss BEN5M-MFR Photoelectric Beam Sensor
ftb score rating icon 9.5

Top 10 Photomicrosensors

#TOP 1

uxcell Photodiodes Light Sensitive Sensors

a19061200ux0052
uxcell Photodiodes Light Sensitive Sensors Cover
uxcell 10pcs Photosensitive Diode Photodiodes Light Sensitive Sensors, 3mm Clear Round Head Receiver Diode

This product is a set of 10 photosensitive diodes that can be used as light sensitive sensors. With a response peak wavelength of 940 nm, it has a clear round head receiver diode made of Si, plastic, and metal. The head size is 3 x 5mm and has an anode (longer part) and cathode (shorter part) polarity. As a photomicrosensor, it has a Vceo of 0.4V and a forward current of 5mA. This product is useful for detecting light and converting it into an electrical signal.

What We Like
Can be used as light sensitive sensors
Clear round head receiver diode made of Si, plastic, and metal
Useful for detecting light and converting it into an electrical signal
#TOP 2

DIYables 50pcs LDR Light Sensors

DIY-LIGHT-SENSOR-100
Without Resistor
DIYables 50pcs LDR Light Sensors Cover
DIYables 50pcs LDR Photoresistor Light Sensor Photocell for Arduino, ESP32, ESP8266, Raspberry Pi

The DIYables LDR Sensors come with 50 light-dependent resistors that are perfect for various projects. With a resistance range that adapts from 5-10KOhm in bright conditions to 0.2MOhm in darkness, you can effectively automate lighting systems or enhance solar tracking setups. These sensors are compatible with popular microcontrollers like Arduino, ESP32, ESP8266, and Raspberry Pi, making them versatile for your needs. You’ll find their ease of integration a major benefit, allowing you to create innovative light-sensitive applications quickly.

What We Like
Large quantity of sensors
Wide resistance range
Compatible with multiple microcontrollers
Ideal for light automation
Great for solar projects
#TOP 3

Taiss BEN5M-MFR Photoelectric Beam Sensor

BEN5M
Onecolor
Taiss BEN5M-MFR Photoelectric Beam Sensor Cover
Taiss/Indoor Wall Mounted Photoelectric Beam Sensor 12-240VDC 24-240VAC Retroreflective photoelectric Sensor Switch Proximity Switch Induction Distance 5M BEN5M

The Taiss BEN5M-MFR Photoelectric Beam Sensor is a reliable and versatile sensor that is perfect for a variety of applications. With its specular reflection type and wide supply voltage range of 12-240VDC 24-240VAC, this sensor can easily detect objects up to 5m away. The quick response time of less than 30ms ensures accurate and efficient detection. The indicator lights, including the green LED for active status, provide clear visibility. With its IP65 protection rating, this sensor is durable and suitable for both indoor and outdoor use. The Taiss BEN5M-MFR Photoelectric Beam Sensor is a high-quality sensor that offers convenience and reliability for your sensing needs.

What We Like
Wide supply voltage range
Quick response time
Durable and suitable for outdoor use

EC Buying 10PCS IR Slotted Optical Sensor Module

EC Buying 10PCS IR Slotted Optical Sensor Module Cover
EC Buying 10PCS IR Infrared Sensor Module Slotted Optical Optocoupler Speed Measuring Sensor Module Photo Interrupter Sensor Motor Speed Detection Robot for Arduino

The EC Buying IR Sensor Module uses a slot-type photoelectric sensor combining an infrared LED and an NPN photo transistor, making it ideal for detecting when an object passes through its 5.9mm slot. This means you can easily measure speeds or detect object presence with precision. It outputs a clear low TTL signal when triggered, which helps you get accurate readings without confusion. The built-in Schmidt trigger ensures the output signal is stable and free from jitter, making it reliable for projects like small car speed measurement or distance sensing. Plus, it comes with mounting holes that fit M3 screws, so installing the sensor on your device is straightforward and secure.

What We Like
Slot-type photoelectric sensor
Clear low TTL output
Stable signal with Schmidt trigger
Easy mounting with M3 holes
#TOP 5

EC Buying 4-Pin Photodiode Sensor Module

EC Buying
EC Buying 4-Pin Photodiode Sensor Module Cover
EC Buying Photodiode Sensor Module, 4 Pins Photodiode Sensor Module, 5mm Photodiode Module, for Digital Light Brightness Detection, Photosensitive Sensor Module for Arduino(10PCS)

The EC Buying Photodiode Sensor is designed to detect light brightness with precision, focusing only on light coming directly at it. This means you can accurately track specific light sources without interference from surrounding light. The sensor’s sensitivity is adjustable, allowing you to fine-tune it for different lighting conditions, which gives you better control over your projects. It works with a wide voltage range (3.3V to 5V), making it easy to connect to various microcontrollers. The sensor also provides both digital and analog outputs, so you can choose the best way to read light levels depending on your needs.

What We Like
Directional light detection
Adjustable sensitivity
Wide voltage compatibility
Digital and analog outputs
#TOP 6

JESSINIE BY-H42B6 Optical Interrupter Sensor

BY-H42B6
JESSINIE BY-H42B6 Optical Interrupter Sensor Cover
JESSINIE 20pcs Transmission Type Photoelectric Switch Optical Interrupter Sensor Opto Photo Interrupter Slot Optocoupler

The JESSINIE Optical Slot Sensor is designed with a gallium arsenide infrared LED paired with a silicon phototransistor, offering you precise and reliable signal detection. Its slot design lets you easily interrupt the light beam using items like printers or scanners, changing the sensor’s output and helping you monitor mechanical movements or object presence. With a 940nm visible wavelength cutoff, this sensor captures a wide range of light, allowing for better performance even in low-light settings. Plus, it’s environmentally friendly, free of lead, and meets RoHS standards, so you can trust it to be safe and sustainable without sacrificing quality.

What We Like
High mechanical resolution
Effective signal interruption
Wide light spectrum detection
Eco-friendly Pb free design
RoHS compliant
#TOP 7

Taiss Optical Photoelectric Beam Sensor

E3F-20DNL
Taiss Optical Photoelectric Beam Sensor Cover
Taiss/1 Pair photoelectric Switch 0-20M Through-Beam Reflection Optical Photoelectric Beam Sensor NPN NO photoelectric Sensor Switch 6-36V Proximity Switch with Infrared Ray Beam E3F-20DNL-Z-12MM

The Taiss Optical Photoelectric Beam Sensor is a versatile product that can be used for outdoors gates, garage doors, and indoor/outdoor usage. It has a Sensory Distance of 0-20m and Supply Voltage of 6-36V DC. The product comes with a pair of sensors and mounting brackets for convenience. The body size of this product is 66mm x12mm/2.6" x0.47"(Max.D*L) and it has a cable length of 120cm/47".

What We Like
Versatile product suitable for outdoors gates, garage doors, and indoor/outdoor usage
Comes as a pair of sensors with mounting brackets for convenience
Sensory Distance of 0-20m and Supply Voltage of 6-36V DC
#TOP 8

Mageway E3JK-R4M1 Photoelectric Beam Sensor

不适用
PS103
Mageway E3JK-R4M1 Photoelectric Beam Sensor Cover
Mageway Indoor E3JK-R4M1 Retro-Reflective Photoelectric Beam Sensor 12-240VDC 24-240VAC Infrared Sensor Switch Proximity Switch 6FT Cable Induction 4M

Introducing the Mageway E3JK-R4M1 Photoelectric Beam Sensor, a versatile and reliable sensor that offers a wide range of applications. With its invisible beam, this sensor provides higher security, making it ideal for safety purposes in garage doors, outdoor gates, and overhead door security. Its big size reflector allows for easy alignment and longer detecting distance, surpassing the capabilities of rectangle reflector sensors. The sensor also features a wide range input of 12-240VDC 24-240VAC, ensuring an easy power solution. Additionally, it comes pre-wired with a 6 ft cable for effortless wire connection. The Mageway Photoelectric Beam Sensor is a must-have for industrial automation, detecting small objects on manufacturing lines, entry detection for store fronts, measuring parking distance, and alarm systems. Upgrade your security and automation systems with this reliable and versatile sensor.

What We Like
Higher Security
Wide Range Input
Easy Alignment
#TOP 9

uxcell 20pcs Photosensitive Diode Photodiodes Light Sensitive Sensors

a19061200ux0041
Clear
uxcell 20pcs Photosensitive Diode Photodiodes Light Sensitive Sensors Cover
uxcell 20pcs Photosensitive Diode Photodiodes Light Sensitive Sensors,3mm Clear Flat Head Receiver Diode

This product by uxcell includes 20 photosensitive diodes with a receive wave range of 400-1100 nm and a response peak wavelength of 940 nm. The clear flat head receiver diode is made of Si, plastic, and metal with a head size of 3 x 4mm / 0.12 x 0.16 inch (D*H). Additionally, the polarity of the diode is noted as Anode (Longer Part) and Cathode (Shorter Part). Designed as photomicrosensors, this product can be used in a variety of applications.

What We Like
Includes 20 photosensitive diodes
Wide receive wave range of 400-1100 nm
Response peak wavelength of 940 nm
#TOP 10

Taiss E3F-DS30C4 Adjustable Photoelectric Sensor

E3F-DS30C4
NPN NO
NPN NO
Taiss E3F-DS30C4 Adjustable Photoelectric Sensor Cover
Taiss/photoelectric Sensor 30 cm Adjustable M18 Diffuse photoelectric Switch Sensor Optical Three Lines NPN NO (Normally Open) Proximity Switch 6-36VDC E3F-DS30C4

The Taiss Photoelectric Sensor offers a handy detection range that you can adjust up to 30 cm, making it flexible for various sensing needs. Its diffuse reflection type means it detects objects by reflecting infrared light, allowing you to use it in different environments without needing a reflector. Operating on a wide voltage range from 6 to 36 volts DC, this sensor is compatible with many systems, giving you convenience and reliability. The sensor features a three-wire output with an NPN normally open configuration, which simplifies connecting it to your devices for smooth operation and easy integration.

What We Like
Adjustable detection distance
Diffuse reflection sensing
Wide voltage range
NPN normally open output
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is a Photomicrosensor?

A Photomicrosensor is a small photoelectronic sensor with an amplifier built into it that is used primarily as a component for building into equipment. Like any ordinary photoelectric sensor with a built-in amplifier, it is used, for example, in applications to detect passing objects or in positioning applications.

2. How does a slot sensor work?

Working principle of slot photoelectric sensor The illuminator can emit infrared light or visible light, and the light receiver can receive light without obstruction. But when the detected object passes through the slot, the light is blocked, and the photoelectric sensor starts to work.

Editor's Notes

During our photomicrosensor research, we found 24 photomicrosensor products and shortlisted 10 quality products. We collected and analyzed 4,965 customer reviews through our big data system to write the photomicrosensors list. We found that most customers choose photomicrosensors with an average price of $14.97.

The photomicrosensors are available for purchase. We have researched hundreds of brands and picked the top brands of photomicrosensors, including uxcell, DIYables, Taiss, EC Buying, JESSINIE. The seller of top 1 product has received honest feedback from 12,477 consumers with an average rating of 4.8.

Written by
Brian Howie Avatar

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.