The HW416B PIR sensor module has three pins:
Turning this potentiometer clockwise increases the detection distance. Delay Adjustment: hw416b pir sensor datasheet better
The HW416B is a popular passive infrared (PIR) motion sensor module, often compared to the HC-SR501. However, finding a can be frustrating. Many available documents miss critical details like retriggering timing, lens specifications, or voltage ripple sensitivity. The HW416B PIR sensor module has three pins: