Description
Reviews
| 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 |
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.
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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