WWZMDiB 6Pcs IR Infrared Sensor 3-Wire Reflective Photoelectric Module for Arduino

I picked up this WWZMDiB 6-Pack IR Infrared Sensor Set for a few projects involving motion detection and simple object sensing, and I’m really impressed with how well they perform. The sensors are easy to integrate with microcontrollers like Arduino, ESP32, and Raspberry Pi, and they gave consistent results right out of the box. Installation was quick — the pins are clearly labeled and they fit nicely on a breadboard. I used them for obstacle detection and simple proximity triggers, and they were responsive and stable with very few false readings. The adjustable potentiometer makes it easy to fine-tune detection range for different needs, which is really handy. Overall, this is a great value pack with multiple sensors so you’ve got spares for experimenting or multiple builds. The performance has been rock solid, and I’d definitely recommend it to anyone needing reliable IR detection for robotics, automation, or DIY electronics projects.

Super cheap for the amount of sensors provided. They work superbly, detecting black and white like a charm. The wires that come with the sensors are also very high quality and super handy.

Easy to integrate into your setup, outputs a straightforward hi/low signal for digital I/O. Sensing distance is consistent, but as noted in the description can be impacted especially when the surface being reflected off of is black or otherwise absorbs the IR light. In that case, the sensor will not trigger and you'd be better served with a different technology - not a defect of this component - just a shortcoming of the specific sensor technique.

These seem like good, sensitive sensors. There are two drawbacks: 1. They have bright LED indicators for power and the digital output which have no convenient way to disable. 2. They only have a digital output. I'd like to see these sensors come with either no LED indicators or jumpers/switches to disable the indicators and an analog output which just varies the output voltage between 0-Vcc.

I bought these to sense trains passing by in my model railroad setup. All six modules work fine, I even dropped a couple of them on the floor a few times from about 3' and they survived. (Not recommending it.) After reading reviews on other modules that look similar to these, I ended up running them at 3.3V and haven't experienced any problems so far. For my needs I had to desolder both the detector and emitter from the circuit board and extend them with 6" wires. Even with this untypical installation, the modules performed as advertised. The adjustment pot seems to only work about half of its movable range, once you turn it about 50% it seems to stay in the detecting state, so you might lose a little precision in fine adjustments. It worked well enough for my purposes, but it would have been nice to have the full range which is only about 3/4 of a full-turn the way it is. In case you are wondering they acted this way before I made my modifications, so adding the length of wire did not change this characteristic. The Dupont connectors are what they are, fairly flimsy but do the job adequately for setup and testing in a breadboard. I wouldn't necessarily recommend using them in a permanent installation like mine. I custom made my own wires for my needs.

Needed to make a “bag full” sensor for my woodworking dust collector. Had to be outside the bag looking through a plastic window. I figured this product was a long shot and expected to return it. Wrong! Worked perfectly on the first try! Now I’m trying to think of other uses for this. Nice to find something inexpensive that actually works!

This device functions effectively only in dark or low-light environments. It cannot operate outdoors under sunlight, as strong ambient light continuously triggers the output, even when no object is present in front of it.

Just what I needed, IR sensor worked perfectly.

Works well