The HW-416B is a robust, low-power choice for security systems, automated lighting, and robotics. By leveraging its wide voltage range and internal digital filtering, you can achieve much more reliable results than with standard entry-level sensors.
Understanding the datasheet is crucial for integrating the HW416B into your projects. Specification 4.5V - 20V DC (Recommended: +5V) Output Voltage 3.3V High/Low Level (TTL) Quiescent Current Detection Angle < 110° Cone Angle Detection Range 3 to 7 Meters (Adjustable) Delay Time 5s - 300s (Adjustable) Blocking Time Default 3-4 seconds Operating Temp -15°C to +70°C Understanding the Components
: Ground reference. Must be shared with your microcontroller's ground. Onboard Adjustments hw416b pir sensor datasheet better
Passive Infrared sensors do not emit radiation. Instead, they passively detect infrared radiation (heat) emitted by living bodies.
Occupancy detection, lighting control, and any scenario where you want the output to stay active while people are present. The HW-416B is a robust, low-power choice for
Adjustable from 5 seconds to 5 minutes (300 seconds) via a second potentiometer.
While most datasheets give you a wall of text, here are the numbers that actually matter for your build: Wide range from 4.5V4.5 cap V to 12V12 cap V (though is standard). Detection Range: Up to 7 meters in a 120∘120 raised to the composed with power cone. Output Signal: A simple digital "High" at 3.3V3.3 cap V logic level when motion is detected. Current Draw: Extremely low idle current (around ), making it perfect for battery-powered setups. 2. The "Better" Adjustments: Potentiometers and Jumpers Specification 4
The hardware requires specific electrical thresholds to work reliably without burning out or experiencing logic voltage drops. PIR Sensor Working, Types, Applications, and Benefits
attachInterrupt(digitalPinToInterrupt(PIR_PIN), motionISR, RISING);
Here's a simple, reliable sketch to get your HW-416B working with Arduino:
The module pairs a dual-element pyroelectric core (such as the RE200B) with a and an NL-11NH Fresnel lens. This combination creates 17 distinct detection zones across a wide viewing angle.