Hw-416-b Pir Sensor Datasheet <TOP-RATED>
The sensor outputs HIGH when motion is detected. Once the delay time expires, the output automatically drops to LOW, even if the target is still moving within the detection zone.
A frequent complaint with the HW‑416‑B is that it triggers constantly after being mounted in a certain location. This is usually caused by:
Increases the duration the output remains HIGH after motion stops (up to 200s+). Counter-clockwise: Decreases the delay (down to ~0.5s). Trigger Mode Jumper (L/H)
Turning this clockwise increases the detection distance (up to 7 meters). Counter-clockwise reduces it (down to ~3 meters), which is useful for small indoor spaces to avoid false triggers. hw-416-b pir sensor datasheet
Inadequate filtering or voltage fluctuations on the VCC line can cause false triggers. Add a 100µF decoupling capacitor across VCC and GND close to the sensor.
The is a high-performance passive infrared (PIR) motion sensor module, frequently used as a direct, reliable replacement for the standard HC-SR501 . It detects human and animal movement by sensing changes in infrared radiation emitted by warm objects. Core Specifications is electrically and physically identical to the Go to product viewer dialog for this item.
Connecting the HW-416-B to an Arduino is straightforward because its 3.3V output is compatible with most digital pins. HW-416-B Pin Arduino Pin Digital Pin 2 Example Code Snippet HW-416B: PIR MOTION SENSOR FOR ARDUINO The sensor outputs HIGH when motion is detected
PIR_PIN = 17 # GPIO17 connected to OUT
Getting Started with the HW-416-B PIR Motion Sensor: A Complete Guide
The following script reads the digital output of the HW-416-B and toggles the onboard Arduino LED (Pin 13) when motion is sensed. It also prints logs to the Serial Monitor. This is usually caused by: Increases the duration
The table below details the electrical and environmental operating parameters of the HW-416-B module. Specification DC 4.5V to 20V 5V standard recommended Static Current Low power standby mode Level Output High 3.3V / Low 0V Digital signal output Delay Time 0.5 seconds to 200 seconds Adjustable via potentiometer Block Time 2.5 seconds Default factory setting Detection Distance 3 meters to 7 meters Adjustable via potentiometer Sensing Angle < 100 degrees cone angle Enhanced by Fresnel lens Operating Temperature -15°C to +70°C Avoid direct sunlight/heat sources PCB Dimensions Approx. 32mm x 24mm Compact form factor 3. Pinout Configuration
The HW-416-B is a PIR motion sensor designed to detect motion by measuring changes in the infrared (heat) levels emitted by surrounding objects. Unlike active sensors, PIR sensors do not emit energy; they only "passively" receive infrared radiation.
The white, plastic dome is not just a protective cover; it is a Fresnel lens. It serves two purposes:
This code monitors the HW-416-B sensor. When motion is detected, it illuminates the built-in Arduino LED (Pin 13) and prints a alert message to the Serial Monitor.
Users have reported some common issues, particularly with false triggers or the sensor not behaving properly.
