Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	E18-D80NK
Detection Type	Diffuse Reflective
Output Configuration	NPN Normally Open
Operating Voltage	5V DC
Detection Range	3cm to 80cm (Adjustable)
Response Time	≤ 2ms
Indicator Light	Green LED (Power), Red LED (Detection)
Wire Count	3-Wire (Brown: VCC, Blue: GND, Black: Signal)
Mounting Thread	M18 x 1mm
Application	Obstacle Avoidance, Line Following, Object Counting

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Perfect for my robot car project

This sensor works exactly as described. The detection range is easily adjustable with the potentiometer on the back. I used it for obstacle avoidance on an Arduino-based robot, and the response time is incredibly fast. Highly recommended for hobbyists.

Anonymous

Mar 28, 2026

Rating: 3/5

Works well but instructions could be better

The sensor itself functions great once you figure out the tuning. The product listing didn't have a detailed pinout diagram, so I had to search online to confirm the wire colors. Once connected, it performs solidly.

Anonymous

Mar 26, 2026

Rating: 5/5

Reliable NPN output

I needed a specific NPN output for my PLC interface, and this module delivered without issues. The wiring is standard color-coded, making installation very quick. The build quality feels sturdy for the price point.

Anonymous

Mar 23, 2026

Rating: 5/5

Easy to integrate with Raspberry Pi

Bought this for a university project. Connecting it to a Raspberry Pi GPIO was straightforward. The ability to adjust the sensitivity allows me to ignore background noise effectively. Very satisfied with the purchase.

Anonymous

Mar 10, 2026

Rating: 4/5

Good value but sensitive to sunlight

Great sensor for indoor projects. It detects objects reliably within the stated range. However, I noticed it gets a bit erratic when used near direct sunlight outdoors. For indoor automation or shaded areas, it is excellent.

Anonymous

Mar 07, 2026

Rating: 4/5

Solid performance for small automation

Using these on a small conveyor belt setup to count items. They are consistent and haven't failed yet after two weeks of continuous operation. Just ensure your power supply is stable at 5V for best results.

5 FAQ

Q: How do I adjust the detection distance?

A: There is a small blue potentiometer on the back of the sensor module. Use a small screwdriver to turn it clockwise to increase the range or counter-clockwise to decrease it while testing with your target object.

Q: What is the maximum current this sensor can sink?

A: The NPN output can typically sink up to 100mA. However, for driving heavy loads like motors or high-power relays, we recommend using the sensor signal to trigger a transistor or relay module.

Q: Is this compatible with 12V systems?

A: No, this specific model (E18-D80NK) is designed for 5V DC operation only. Connecting it to 12V may damage the internal circuitry. Please use a voltage regulator if your system runs on 12V.

Q: Can this sensor detect black objects effectively?

A: Yes, it can detect black objects, but the detection range may be reduced compared to lighter colored objects due to lower light reflection. You may need to adjust the sensitivity potentiometer to compensate.

Q: Does the package include mounting nuts?

A: Yes, each unit comes with two M18 mounting nuts to secure the sensor into a panel or bracket immediately upon arrival.

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