If you find your PIR sensor is triggering randomly, the "better" way to handle it isn't just software—it's hardware.
The HW-416B has (trimpots).
Since the "HW-416B" is often confused with the (they share the same BISS0001 chip and lens), this post focuses on clarifying the actual specs and how to use it effectively. hw416b pir sensor datasheet better
HW-416B PIR sensor is a high-performance passive infrared motion detector widely recognized as a reliable alternative to the industry-standard HC-SR501 If you find your PIR sensor is triggering