Sensing Technology Solution for Space Efficiency, Precision, and Faster Response
As automation demands increase, sensing technology must adapt to stricter space constraints, higher precision, and faster response requirements. IDEC’s SA1N Subminiature Photoelectric Sensor addresses these needs with its ultra compact design and built-in amplifier, eliminating the space typically required for separate components. Its durable construction ensures reliable performance even in harsh environments, while adjustable sensitivity simplifies setup. From counting components to positioning tasks, the SA1N is a compact powerhouse engineered to excel in modern industrial applications.
Subminiature photoelectric sensors use wires so they can be bent freely
Because it is an electric wire, there is no need to worry about it breaking like with fiber optic sensors. The advantage of the SA1N Subminiature photoelectric sensor is that it is easy to install and reduces the replacement costs incurred if the sensor breaks.

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This small sensor allows you to adjust the sensitivity
The SA1N Subminiature photoelectric sensor is equipped with a sensitivity adjustment volume. It can be set according to the type of workpiece and distance. This increases the flexibility of sensor installation.
Built-in amplifier type saves total space
Although some fiber optic sensors are compact, they still require space to install an amplifier. The SA1N mini photoelectric sensor has a built-in amplifier, so there is no need to consider where to install the amplifier.


Easy to install size
The mini-sized body makes it possible to install it in applications where fiber sensors were previously installed. Also, drilling holes directly into the housing for installation reduces labor and costs.
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SA1N Series Catalog
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Common Questions
What is the SA1N Subminiature Photoelectric Sensor?
The SA1N is a compact, high-performance photoelectric sensor with a built-in amplifier, designed for precise object detection in tight spaces. It eliminates the need for a separate amplifier and simplifies installation.
What are the main applications for the SA1N sensor?
Common applications include:
- Detecting missing electronic components
- Counting parts on conveyor lines
- Positioning in PCB conveyor lines
- Use in medical equipment and bottle cap detection systems
How small is the SA1N sensor?
The SA1N features an ultra-compact design:
- Fiber type sensor head diameter: M6
- Block type mount pitch: 14mm
This makes it ideal for installation in space-constrained environments
What are the sensing ranges available?
Diffuse-reflective models: 3mm to 50mm
Convergent-reflective models: 5mm to 30mm
Does the SA1N require an external amplifier?
No, the SA1N includes a built-in amplifier, reducing installation space and simplifying wiring
What types of outputs are available?
Both NPN and PNP open collector outputs are available, making the SA1N adaptable to various system requirements
What is the response time of the SA1N sensor?
The sensor offers a fast response time of 0.5ms maximum, supporting high-speed applications
Is there a sensitivity adjustment feature?
Yes, the SA1N offers easy post-installation sensitivity adjustment to optimize performance for different applications