The is a reliable, low-cost PIR motion sensor perfect for hobbyist and light commercial projects. While you won’t find an official “HW-416-B datasheet” from a major semiconductor brand, the HC-SR501 documentation applies directly . Use the specs and tips above to integrate it into your next motion-sensing project.
void loop() int motionState = digitalRead(pirPin); hw-416-b pir sensor datasheet
On the corner of the module, you will find three solder pads or a jumper labeled and L . The is a reliable, low-cost PIR motion sensor
HW-416-B → Arduino VCC → 5V GND → GND OUT → Digital Pin 2 void loop() int motionState = digitalRead(pirPin); On the
Digital output signal (Connect to an Arduino digital pin or a relay module). GND: Ground connection. Key Features & Usage Immunity to Interference: Unlike larger sensors, the
Triggering a camera shutter or video recording when an animal passes by.