Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensor Type	Through-Beam Photoelectric
Detection Method	Infrared Through-Beam
Output Signal	Digital (High/Low)
Operating Voltage	3.3V - 5V DC
Detection Distance	0 - 100mm (Adjustable)
Response Time	< 2ms
Indicator LED	Power and Signal Status
Mounting Style	PCB Slot-Type with Screw Holes
Wavelength	940nm Infrared
Application	Object Counting, Speed Measurement, Limit Switching

6 reviews

Anonymous

Mar 22, 2026

Rating: 5/5

Reliable industrial prototype component

Using this to prototype a new counting system before scaling up. The performance is consistent even in varying ambient light conditions. Excellent product for prototyping.

Anonymous

Mar 20, 2026

Rating: 4/5

Good value, needs careful alignment

Great little sensor for the price. You need to make sure the emitter and receiver are perfectly aligned for maximum range, but once set up, it is very reliable. Works well with Arduino Uno.

Anonymous

Mar 10, 2026

Rating: 4/5

Great for learning sensors

Bought this for a university project. It was easy to interface with our microcontroller. The only reason for 4 stars is that the documentation could be slightly more detailed regarding voltage limits.

Anonymous

Mar 05, 2026

Rating: 5/5

Perfect for my conveyor counter project

This sensor module worked exactly as described. The alignment was easy thanks to the clear LEDs, and it counts items on my mini conveyor belt without missing a beat. Very stable output signal.

Anonymous

Mar 04, 2026

Rating: 5/5

Robust build quality

The PCB feels solid and the components are well-soldered. I appreciate the mounting holes which made installation in my enclosure very straightforward. No issues after weeks of continuous use.

Anonymous

Mar 04, 2026

Rating: 5/5

Fast response time

I used this for a high-speed sorting mechanism. The response time is incredibly fast, handling rapid interruptions of the beam without lag. Highly recommended for automation projects.

5 FAQ

Q: How do I adjust the detection sensitivity or distance?

A: This specific slot-type model has a fixed gap. Detection reliability depends on aligning the emitter and receiver precisely. There is no potentiometer for sensitivity adjustment on this board; ensure the object fully breaks the beam.

Q: Can this sensor detect transparent objects like glass or clear plastic?

A: While it can detect some transparent materials, through-beam infrared sensors work best with opaque objects. Transparent objects may allow enough IR light to pass through, preventing detection depending on thickness and material.

Q: Is the output compatible with 3.3V logic levels like ESP32?

A: Yes, the digital output is compatible with both 5V and 3.3V logic systems, making it suitable for use with ESP32, Raspberry Pi, and standard Arduino boards.

Q: Does this come with connecting wires or headers?

A: The module comes with pin headers installed on the PCB, but connecting wires are not included. You will need to solder your own wires or use jumper cables to connect it to your controller.

Q: What is the maximum current draw of this module?

A: The module typically draws around 15mA to 20mA when active. Please refer to the specific datasheet provided in the download section for precise electrical characteristics under different loads.

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