Attributes

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

6 reviews

Anonymous

Mar 24, 2026

Rating: 5/5

Easy to integrate

I am new to electronics and this was very easy to wire up. The three-wire system is straightforward. It detected my hand instantly at about 50cm. Highly recommend for beginners working on automation projects.

Anonymous

Mar 23, 2026

Rating: 3/5

Works well but sensitive to sunlight

Indoors, this sensor is fantastic. However, when I tried using it near a window with direct sunlight, the infrared interference caused some erratic behavior. Shielding it helped, but something to keep in mind for outdoor use.

Anonymous

Mar 23, 2026

Rating: 4/5

Good sensor, needs careful calibration

The build quality is solid and the LEDs are bright enough to see status clearly. You do need to spend a few minutes calibrating the distance threshold depending on your ambient light conditions, but once set, it is very reliable.

Anonymous

Mar 16, 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. Great value for the price.

Anonymous

Mar 12, 2026

Rating: 5/5

Compact and effective

Small form factor fits perfectly into my 3D printed enclosure. The detection range claim of 80cm is accurate for white objects; darker objects reduce the range slightly as expected with IR sensors. Excellent product.

Anonymous

Mar 12, 2026

Rating: 5/5

Reliable NPN output

Bought five of these for a conveyor belt counting system. The NPN output interfaces perfectly with my PLC input module. No false triggers so far after two weeks of continuous operation. Very satisfied.

5 FAQ

Q: Is this compatible with 3.3V logic systems like Raspberry Pi?

A: The sensor operates on 5V. While the output is NPN (open collector), you should use a pull-up resistor to 3.3V if connecting directly to a Raspberry Pi GPIO to ensure safe logic levels, or use a level shifter for best practices.

Q: Can this sensor detect black objects effectively?

A: Yes, it can detect black objects, but the effective detection range will be shorter compared to white or reflective surfaces due to lower infrared reflection. We recommend testing your specific application distance.

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

A: The NPN output transistor can typically sink up to 100mA. However, for driving high-power loads, we strongly recommend using the sensor signal to control a relay or MOSFET rather than connecting the load directly.

Q: Does the package include mounting screws?

A: No, mounting screws are not included in the package. The module has two standard mounting holes that accept M3 screws, which are commonly available at most hardware stores.

Q: Can I use multiple sensors close together without interference?

A: Placing multiple IR sensors very close together may cause cross-talk. If you must place them nearby, try to stagger their operation times in your code or add physical shielding between them to minimize interference.

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