Power ON │ ├── Warm-up (~30-60s) – output remains LOW/random │ ▼ Idle – OUT = LOW │ ├── Motion detected ──► OUT = HIGH │ │ │ ├── If retriggering (H): timer resets on each new motion │ └── If single (L): timer runs once │ ▼ Delay ends – OUT = LOW
The following parameters are standard for the HW-416-B module: Specification DC 4.5V – 20V Quiescent Current < 50µA (ideal for battery use) Output Signal Digital (High 3.3V / Low 0V) Detection Distance Adjustable (3 meters to 7 meters) Delay Time Adjustable (5 seconds to 300 seconds) Detection Angle < 110° cone angle Operating Temp -15°C to +70°C Trigger Modes L (Non-repeatable) or H (Repeatable) Pinout and Interface
| Parameter | Specification | | :--- | :--- | | | DC 4.5V – 20V | | Quiescent Current | < 50µA (Micro-power design) | | Output Signal | Digital High (3.3V) / Digital Low (0V) | | Output Current | Max 15mA (suitable for driving relays or LEDs directly) | | Detection Range | Approximately 3 to 7 meters (Adjustable) | | Detection Angle | < 100° – 120° (Dependent on Fresnel Lens) | | Trigger Method | Repeatable Trigger (Default) / Non-repeatable (Selectable) | | Operating Temp | -20°C to +50°C | | PCB Dimensions | Approx. 32mm x 24mm | hw-416-b pir sensor datasheet
The is a cost-effective, easy-to-use PIR motion sensor module ideal for occupancy detection, security lights, automatic doors, and interactive electronics. Its adjustable sensitivity and delay, plus retriggering mode, make it versatile for both simple and advanced projects.
void loop() int motion = digitalRead(pirPin); if (motion == HIGH) digitalWrite(ledPin, HIGH); Serial.println("Motion detected!"); else digitalWrite(ledPin, LOW); Power ON │ ├── Warm-up (~30-60s) – output
The HW-416-B features a 3-pin interface for easy integration with microcontrollers like Arduino or Raspberry Pi : : Connect to positive power (4.5V - 20V).
The module utilizes technology.
This sensor detects movement by sensing changes in infrared radiation emitted by living organisms, typically within a range of . Technical Specifications (Datasheet Summary)