Photomicrosensors are essential components in various automated systems, providing precise object detection, position sensing, and liquid level monitoring. They are commonly employed in industrial automation, robotics, and consumer electronics to ensure accurate operation and safety. Products were evaluated based on sensing technology, output configuration, application specificity, user reports, and feature analysis.
OMRON EE-SX671 4 POLES, 5 MM (SLOT WIDTH) SENSING DISTANCE, DARK-ON/LIGHT-ON (SELECTABLE) OUTPUT CONFIGURATION, INCIDENT LIGHT, L-SHAPED, NON-MODULATED, NPN OUTPUT, PHOTOMICROSENSOR, SLOT-TYPE, THROUG
The OMRON EE-SX671 offers versatile selectable output and a practical L-shaped design, making it adaptable for numerous detection scenarios.
Search on AmazonOmron EE-SX670 Slot Photomicrosensor, Through Beam Sensing, 1 kHz
The Omron EE-SX670 provides reliable through-beam sensing at a competitive price point, suitable for fundamental object detection tasks.
Search on AmazonOMRON EE-SPX613 Liquid Level Photomicrosensor, Transm, Photo IC Dark/Light-ON NPN O.C.Control Output 5-24V 100mA, Sensing Liquid in 6-13 mm Dia Pipe, LED 940nm, Sensitivity selector
The OMRON EE-SPX613 is a highly specialized liquid level sensor with advanced features like a sensitivity selector, ideal for precise fluid management.
Search on AmazonLooking for the best Photomicrosensors?
Discover now our comparison of the best Photomicrosensors. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Photomicrosensors are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Photomicrosensors in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.
- 4 POLES
- 5 MM (SLOT WIDTH) SENSING DISTANCE
- DARK-ON/LIGHT-ON (SELECTABLE) OUTPUT CONFIGURATION
- INCIDENT LIGHT
- L-SHAPED
- 1 CHANNEL
- 4 PIN
- 5 MM SLOTTED CASE
- 5-24 VDC
- DARK ON/LIGHT ON
What is the purpose of a comparison site?
When you search for a product on the Internet, you can compare all the offers that are available from the sellers. However, it can take time when it is necessary to open all the pages, compare the opinions of the Internet users, the characteristics of the products, the prices of the different models… Offering you reliable comparisons allows us to offer you a certain time saving and a great ease of use. Shopping on the Internet is no longer a chore, but a real pleasure!
We do everything we can to offer you relevant comparisons, based on various criteria and constantly updated. The product you are looking for is probably among these pages. A few clicks will allow you to make a fair and relevant choice. Don’t be disappointed with your purchases made on the Internet and compare the best Photomicrosensors now!
Last update on 2026-04-17 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Photomicrosensors
Understanding Sensing Mechanism and Distance
When selecting a photomicrosensor, the primary consideration is often its sensing mechanism and the required distance. Photomicrosensors typically fall into two main categories: transmissive (slot-type) and reflective. Transmissive sensors, like the OMRON EE-SX671, feature an emitter and receiver facing each other, detecting an object when it breaks the light beam. The EE-SX671 specifies a 5 mm slot width, which is the maximum object thickness it can reliably detect. For applications requiring longer distances or where an object cannot pass through a slot, through-beam sensors such as the OMRON EE-SPWL311 offer up to 1 meter sensing distance. Reflective sensors, exemplified by the EE-SY672, detect objects by sensing reflected light, which can be useful when only one side of the object is accessible. Users often report that the choice between these types fundamentally dictates the sensor's suitability for a given physical setup.
Output Configuration and Electrical Compatibility
The output configuration of a photomicrosensor is crucial for its integration into control systems. Common types include NPN and PNP, as well as selectable Dark-ON/Light-ON options. The OMRON EE-SX671, for instance, provides a selectable Dark-ON/Light-ON output, allowing the sensor to trigger either when the light beam is interrupted (Dark-ON) or when it is clear (Light-ON). The OMRON EE-SPX613 features an NPN output, which is a common choice for sinking current in control circuits. It's important to match the sensor's output type and voltage requirements (e.g., 5-24VDC for many Omron models) with the input specifications of the programmable logic controller (PLC) or microcontroller being used. In practice, mismatching these electrical characteristics can lead to malfunction or damage to connected components.
Application-Specific Features and Form Factor
Beyond basic detection, many applications demand specific features or form factors. For specialized tasks like monitoring fluid levels in transparent pipes, the OMRON EE-SPX613 is purpose-built, capable of sensing liquid in 6-13 mm diameter pipes and including a sensitivity selector for fine-tuning. For general object detection, the physical size and shape of the sensor are critical for mounting. The OMRON EE-SX671 comes in an L-shaped form factor, which can be advantageous for mounting in tight spaces or at right angles to the detection path. Other options include PCB mount designs, such as the OMRON EE-SX1046, or F-shaped designs like the OMRON EE-SX952-W, each optimized for different installation environments. Choosing the correct form factor ensures proper alignment and robust integration without requiring custom brackets or complex mounting solutions.
Pros & Cons
OMRON EE-SX671 4 POLES, 5 MM (SLOT WIDTH) SENSING DISTANCE, DARK-ON/LIGHT-ON (SELECTABLE) OUTPUT CONFIGURATION, INCIDENT LIGHT, L-SHAPED, NON-MODULATED, NPN OUTPUT, PHOTOMICROSENSOR, SLOT-TYPE, THROUG
Pros
- Selectable Dark-ON/Light-ON output offers significant application flexibility.
- L-shaped form factor facilitates diverse mounting orientations in confined spaces.
- 5 mm slot width is suitable for detecting a wide range of common objects.
- NPN output is widely compatible with industrial control systems.
Cons
- Non-modulated sensing can be susceptible to interference from strong ambient light sources.
- Fixed slot width might not be ideal for extremely thin or very thick objects.
Omron EE-SX670 Slot Photomicrosensor, Through Beam Sensing, 1 kHz
Pros
- Reliable through-beam sensing mechanism for consistent object detection.
- 1 kHz response rate supports applications requiring fast detection cycles.
- Standard slot-type design ensures ease of integration in many setups.
- Widely available and a common choice for general-purpose tasks.
Cons
- Lacks the selectable output configuration found in similar Omron models.
- Specific sensing distance not detailed, which may require additional specification review.
OMRON EE-SPX613 Liquid Level Photomicrosensor, Transm, Photo IC Dark/Light-ON NPN O.C.Control Output 5-24V 100mA, Sensing Liquid in 6-13 mm Dia Pipe, LED 940nm, Sensitivity selector
Pros
- Specifically designed for accurate liquid level detection in pipes (6-13 mm diameter).
- Includes a sensitivity selector for precise calibration to different liquid types or pipe conditions.
- Photo IC control output provides robust and stable signal processing.
- LED 940nm wavelength is optimized for liquid transparency and detection.
Cons
- Highly specialized functionality limits its use to liquid sensing applications only.
- Likely carries a higher cost due to its niche application and advanced features.
Common Mistakes to Avoid
Overlooking Sensing Distance and Type
A common mistake involves selecting a photomicrosensor without adequately considering the required sensing distance and mechanism. For instance, attempting to use a slot-type sensor with a 5 mm sensing distance, like the OMRON EE-SX671, for an application that demands detection over a meter, where a long-distance through-beam sensor (e.g., OMRON EE-SPWL311) would be necessary. Similarly, deploying a transmissive sensor where only one side of the object is accessible, overlooking the suitability of a reflective type such as the EE-SY672, leads to significant installation challenges.
Misinterpreting Output Configuration
Users frequently misinterpret or overlook the output configuration, leading to incorrect wiring or system logic. The OMRON EE-SX671 offers a selectable Dark-ON/Light-ON output, but failure to set this correctly for the application's needs can result in inverted logic. For example, if a control system expects a signal when an object is present (Dark-ON for a slot sensor) but the sensor is configured for Light-ON, the system will behave unexpectedly. Similarly, connecting an NPN output sensor, like the OMRON EE-SPX613, to a control input expecting a PNP signal requires additional interface circuitry.
Neglecting Application-Specific Requirements
Another frequent error is attempting to use a general-purpose photomicrosensor for highly specialized applications. For instance, trying to detect liquid levels in a pipe with a standard slot-type sensor instead of a dedicated liquid level photomicrosensor like the OMRON EE-SPX613 will yield unreliable results due to optical properties of liquids and pipe materials. Similarly, overlooking the physical form factor – such as needing an L-shaped sensor like the OMRON EE-SX671 for a specific corner mount, or a PCB mount sensor like the OMRON EE-SX1046 for integration onto a circuit board – can lead to significant installation difficulties and rework.
