Review on HiLetgo 3pcs AM312 Mini Pyroelectric PIR Human Sensor Module Infrared IR Sensor Body Manual Motion Infrared IR Detector by Mark Jefferson

Five stars for expected performance, but those who haven't seen poor soldering directly from product photos might be disappointed. I just re-soldered the bad connections and the sensors are working fine now. No stars are lost as the photos clearly show this issue. I used one of the sensors for a project so that when someone stands in front of or walks past the sensor, the LED string provides accent lighting for a wood project I made. The sensor is great for this application because the person activating the sensor is most likely only a few meters away. The wide input voltage range for the sensor makes it really easy to use in your circuit, be it 3.3 or 5 volts.