| Feature | HW‑416‑B (HC‑SR501) | HC‑SR505 (Mini PIR) | | :--- | :--- | :--- | | | ~3–7 m adjustable | ~3 m fixed | | Delay adjustment | Yes (3 s – 5 min) | No (fixed ~3 s) | | Size | ~32 × 24 mm | ~28 × 20 mm | | Current consumption | < 65 mA | ~50 µA (much lower) |
3 to 7 meters (Adjustable via onboard potentiometer)
. It is designed to detect motion by sensing changes in infrared radiation emitted by objects like human bodies. Key Technical Specifications Based on documentation from Tayda Electronics Popular Electronic
4.5V to 20V DC (typically powered via 5V) Static Current Consumption: < 60 µA Digital Output Level: High (3.3V) / Low (0V) hw-416-b pir sensor datasheet
When powered on, the HW-416-B requires anywhere from 10 to 60 seconds to calibrate itself to the ambient infrared signature of the room. False triggers during this time are completely normal.
| Feature | HW-416-B | HC-SR501 | | :--- | :--- | :--- | | Size | Smaller (32x24mm) | Larger (32x24mm approx, thicker) | | Quiescent Current | < 50 µA | < 65 µA | | Adjustable Time Delay | Usually fixed or very short (2.5s) | Yes (0.3s – 600s) | | Retriggering Mode | Internal (automatic) | Jumper-selectable (single/retrigger) | | Best for | Battery-powered, short-lived triggers | Security lights, long delays |
The HW-416-B’s versatility makes it suitable for a wide range of projects: | Feature | HW‑416‑B (HC‑SR501) | HC‑SR505 (Mini
What should react when motion is detected (e.g., a relay, a buzzer, an MQTT broker packet)? Are you designing a battery-powered system? Share public link
| Parameter | Rating | |-----------|--------| | | DC 4.5V – 20V (5V typical / recommended) | | Quiescent Current | < 50 µA | | Output Signal | Digital TTL: HIGH (3.3V) when motion detected / LOW (0V) when idle | | Detection Range | 2 to 7 meters (adjustable) | | Detection Angle | < 100° to 120° cone angle | | Output Delay Time | 0.3 s to 200 s (adjustable via potentiometer) | | Blockade (Lock) Time | 2.5 seconds (default) | | Trigger Modes | Selectable: Repeatable (H) / Non-repeatable (L) | | Operating Temperature | –20°C to +70°C | | Storage Temperature | –40°C to +80°C | | Dimensions | 32.6 × 24.3 mm |
The PCB is double-layered with a ground plane to reduce noise. The FR-4 material ensures decent thermal stability, though prolonged exposure to direct sunlight or heat sources can trigger false positives (a common trait of all PIR sensors). False triggers during this time are completely normal
Technical Datasheet: HW-416-B PIR Motion Sensor The is a compact, high-sensitivity Passive Infrared (PIR) sensor module designed for automatic motion detection. It is widely used in DIY electronics, security systems, and energy-saving lighting projects due to its low power consumption and easy integration with microcontrollers like Arduino and Raspberry Pi. 1. General Description
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0.5 seconds to 200 seconds (Adjustable via onboard potentiometer)
: If someone remains in the detection area, the output stays high until they leave.