The output remains high as long as motion is detected within the delay period.
import RPi.GPIO as GPIO import time
If the output remains permanently LOW:
Because the sensor relies on heat signatures, avoid placing it near air conditioners, heating vents, incandescent light bulbs, or direct sunlight. Rapidly changing ambient air currents can cause false positive triggers.
This code is a typical example and can be easily adapted for other microcontrollers. hw-416-b pir sensor datasheet
Passive Infrared (PIR) sensing combined with a Fresnel lens to broaden detection range. 2. Technical Specifications & Datasheet Breakdown
If you want, I can convert this into a printable one-page PDF datasheet layout, produce schematic wiring examples, or provide sample Arduino and Raspberry Pi code snippets for the HW-416-B. The output remains high as long as motion
The following sketch reads the PIR sensor once per second and prints the result to the Serial Monitor:
When engineering a circuit, matching component specifications to your system's power and environment constraints is crucial. Below are the verified technical parameters for the HW-416-B module. Electrical Characteristics DC 4.5V to 20V (Commonly driven at 5V) This code is a typical example and can
| Pin Name | Function | Description | | :--- | :--- | :--- | | | Power Input | Connect to +5V DC (or 4.5V–20V). Do not exceed 20V. | | GND | Ground | Common ground with the microcontroller or load circuit. | | OUT | Digital Output | Goes HIGH (3.3V) when motion is detected. Falls LOW after lock-down time. |