| Feature | Standard HC-SR501 | HW416B / Mini PIR (Likely Target) | Winner? | | :--- | :--- | :--- | :--- | | | Large (32mm x 24mm) | Tiny (approx 10mm - 15mm) | HW416B | | Adjustability | Potentiometers for Time/Range | Usually Fixed (Hardware hacks needed) | HC-SR501 | | Aesthetics | Raw PCB, bulky | White dome, sleek | HW416B | | Power Use | Higher (~50uA - 60uA) | Lower (~15uA - 20uA) | HW416B | | Price | ~$1.50 - $2.00 | ~$1.00 - $1.50 | HW416B |
— “HW416B” could be a specific board silkscreen from an unbranded supplier (AliExpress, Amazon, etc.). No official datasheet exists, but specifications typically mirror HC-SR501. hw416b pir sensor datasheet better
is a high-performance Passive Infrared (PIR) motion sensor module, frequently cited as an equivalent or alternative to the popular | Feature | Standard HC-SR501 | HW416B /
Pro tip: Set it to for debugging, otherwise you will think the sensor is broken because it ignores you for 30 seconds after the first wave. is a high-performance Passive Infrared (PIR) motion sensor