HiLetgo3pcs Mini SR602 Motion Sensor Detector Module Pyroelectric Infrared Sensory Switch High Sensitivity for Arduino PI

Great little PIR sensor, great range and sensitivity. Works as advertised. all three worked.

PIR detector worked as expected in my Arduino ESP32 project. Fixed sensitivity and delay times worked fine for me but these can be changed by resistor additions. Just search for SPEC sheets on the WEB, match to these units, and follow instructions to modify sensitivity & delay settings.

2.5 of my mine work as expected. One of my three works most of the time; it does not detect motion like the other two. I dropped the review by a star because if this. Overall, they seem well made and I like the small size. I will continue to explore them further in my esp32 projects.

Using this motion sensor for my ESP32 CAM board, wake up board when motion is detected. Drive entire board with 3.7 Volt battery (charger TP4056). Works fine. No issue hence 5 stars.

Last review I commented that this PIR motion sensor functions incorrectly.I double check my board I have found that one of DC voltage filter capacitors is bad soldered that make voltage supply to the sensor fluctuated and affect the sensor's output.Bottom line, the sensor is well designed with low profile, more art

It senses motion, mine only senses in a line in front of it and not to the sides, but that is likely my fault as the sides are blocked.

After trying these modules out for a while, I can now say that the ones that work, worked great. I added a LDR to one of them which I then used in a project (motion sensing "trip wire" with LED's and piezo buzzer) that has worked great ever since. The second one I received worked at first, but it had an issue. I tried putting on a higher value resistor in order to increase the outputs delay, as stated in the description, but the module couldn't handle it and just barely had any output voltage, so I was forced to put the 0 ohm back on. The third one I received was DOA. After removing/testing all of the components, it seems that the PIR sensor itself is inoperable. I guess I'll keep the rest for spare components. I would definitely suggest purchasing the SR-501 modules, which seem more reliable. The AM-312 has also worked well for me in the past and are a smaller module for those that may need that feature for their project.

I've tested them out to about 8', they see me moving every time. I'm looking forward to getting more for other projects.

Works best of 3.3v sensors I've tried with solar powered esp32

Moindre qualité et surtout la zone de détection aléatoire. Parfois il fout lui expliquer que vous etes là.Tout droit dans l’axe, oui, il détecte bien dans le 3-4 mètres, mais de que vous vous éloigné, vous n'êtes sûr de rien.Il n'y a pas un cône de détection comme pour les PIR 'normaux'.Vous pouvez danser à côté de lui, car l'angle de détection je l'estime à bien moins de 90 grd.La zone de détection est plutôt bizarre, comme un losange plutôt.A mon avis vous ne pouvez pas l'utiliser comme PIR de confiance, mais peut-être comme projet didactique pour l'école.Par contre il est petit et il fonctionne bien autour de 5v avec une sortie claire de signal de 3.3. Et même si dans sa doc il est possible de le paramétrer, je ne pense pas qu’il faut rêver de changer des résistances smd sur ce composant.

Estos sensores son muy pequeños, abren la puerta a múltiples aplicaciones donde no puedes usar sensores estándar (que son enormes comparados con estos), además, la calidad de los materiales es muy buena.