is a compact Passive Infrared (PIR) motion sensor module widely used in DIY electronics and security systems. It is essentially a variant of the popular , sharing a similar footprint and operation. Key Technical Specifications
Show you how to create a using this sensor and a buzzer.
: As passive devices, they do not emit radiation but rather sense it, making them safe and low-power. hw-416-b pir sensor datasheet
Digital output signal. Connect to any digital input pin on your microcontroller. GND Pin: Ground connection. Connect to the system ground.
Unlike some micro-sensors, the HW-416-B typically includes two potentiometers (trimpots) on the back of the PCB to fine-tune its behavior: is a compact Passive Infrared (PIR) motion sensor
If motion is detected while the output is already high, the "delay timer" restarts. The output stays high as long as there is continuous movement. 5. Typical Applications
The HW-416-B is an excellent choice for any system that needs to detect the presence or movement of people. Common applications include: : As passive devices, they do not emit
Supports repeatable and non-repeatable triggering. 2. Technical Specifications
When powered on, the HW-416-B requires anywhere from 10 to 60 seconds to calibrate itself to the ambient infrared signature of the room. False triggers during this time are completely normal.