Disclaimer: Specifications are typical for modules sold under the HW-416-B label. Always test your specific module before finalizing a design.
5V – 12V DC (typical input), with onboard regulation to 3.3V.
: The 3.3V logic output is compatible with both 3.3V and 5V microcontrollers without needing a level shifter. 6. Environmental and Mechanical Considerations
Based on standard manufacturer datasheets for this type of module, here are the key technical parameters: DC (Commonly used with microcontrollers). Static Current: Output Signal: (LOW) - TTL Compatible. Detection Angle: Detection Distance: Up to 7 meters (Adjustable). Delay Time: Adjustable ( Sensitivity: Adjustable (Minimum to Maximum). Operating Temperature: Lens Diameter: Typically Trigger Methods: hw-416-b pir sensor datasheet
The HW-416-B supports both repeatable and non-repeatable trigger modes via its jumper. If the sensor is not retriggering during continuous motion, ensure the jumper is set to (Repeatable) mode.
What are you using? (ESP32, Raspberry Pi, etc.)
Turning this clockwise increases the duration the output pin stays HIGH after detecting motion (up to 200 seconds). Turning it counter-clockwise reduces the time (down to 0.5 seconds). Trigger Mode Jumper (L / H) : The 3
Some early HW-416-B modules have an additional jumper for 5V/3.3V output selection, but the standard version is fixed at 3.3V logic. Always check your specific board revision.
L (non-repeatable) / H (repeatable, default) Operating Temperature: -15°C to +70°C PCB Dimensions: Approx. 32mm x 24mm 🔌 Pinout Configuration
Integrating the HW-416-B with an Arduino Uno is straightforward. HW-416-B PIR Sensor Arduino Uno Jumper Wires LED & 220Ω resistor (for testing) Wiring Diagram: VCC to Arduino 5V GND to Arduino GND OUT to Arduino Digital Pin 2 6. Sample Arduino Code Static Current: Output Signal: (LOW) - TTL Compatible
⚠️ The sensor needs 10–60 seconds to calibrate after power-on. During this time, it may trigger falsely or stay LOW. This is normal.
| Application Category | Use Cases | |---------------------|-----------| | | Burglar alarms, motion-triggered cameras, perimeter monitoring | | Smart Lighting | Automatic hallway/staircase lights, bathroom fans, garage lighting | | Home Automation | Occupancy detection, energy-saving systems, smart room control | | Industrial Automation | Machine safety zones, presence monitoring, automated doors | | STEM Education | Arduino/Raspberry Pi learning projects, robotics, IoT demonstrations | | Energy Management | Classroom/office lighting control, storage monitoring |
The fresnel lens in front of the sensor focuses IR radiation; sensitivity adjusts how much signal change is required to trigger the output. Higher sensitivity extends range but may increase susceptibility to false triggers from small animals or environmental fluctuations.
For more detailed information, you can download the HW-416-B PIR sensor datasheet from the following resources:
4.5V to 20V DC (typically powered via 5V) Static Current Consumption: < 60 µA Digital Output Level: High (3.3V) / Low (0V)