Hw-416-b Pir Sensor Datasheet New! Jun 2026
If the sensor is too sensitive, adjust the sensitivity potentiometer counter-clockwise. 8. Summary
When motion is detected, the output goes HIGH. If the target keeps moving within the detection area before the delay time expires, the timer resets, keeping the output HIGH continuously until the target leaves. Interfacing HW-416-B with Arduino
The HW-416-B features a standard 3-pin header for easy connection to breadboards or jumper wires.
The onboard IC processes this rapid pulse change, validates it against noise, and drives the OUT pin HIGH. 5. Circuit Diagram: Interfacing HW-416-B with Arduino hw-416-b pir sensor datasheet
Upon powering up, the HW-416-B requires anywhere from 10 to 60 seconds to calibrate itself to the ambient infrared environment. False triggers during this timeframe are normal.
Directly outputs a standard logic level signal, requiring no complex communication protocols. 2. Technical Specifications
The HW-416-B module features a standard (2.54mm pitch). The pin labeling is often printed on the back of the PCB. If the sensor is too sensitive, adjust the
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Fresnel Lens (White dome shielding the pyroelectric element) Hardware Layout and Pinout Configuration
For the most up‑to‑date specifications, always refer to the specific datasheet provided with your module, as minor variations may exist between different manufacturers and production batches. If the target keeps moving within the detection
: If your microcontroller operates at 3.3V (such as the Argon or other 3.3V-only boards), you can supply power through the dedicated 3.3V input pin rather than the standard 5V input. When using 3.3V, the default 5V power input pin on the sensor should be left disconnected.
The HW-416-B is more than just a motion detector; it is an energy-efficient trigger. While newer, more expensive "radar" sensors (like the RCWL-0516) can detect motion through walls, the HW-416-B remains the reliable workhorse for line-of-sight detection. It is cheap, tunable, and consumes so little power that it might just be the longest-lasting component in your next battery-operated build.
Turning the Tx potentiometer clockwise increases the duration the output stays "High" after motion ends (from ~0.3 seconds up to 5 minutes). Trigger Jumper:
If you are looking for a standard PDF datasheet for the HW-416-B, you likely won't find one from a major manufacturer. These sensors are generic modules produced by various Chinese factories.
The HW-416-B does not "see" light like a camera. Instead, it detects .
