Hw-416-b Pir — Sensor Datasheet
HW-416-B PIR Sensor Datasheet: Pinout, Specifications, and Application Guide
Limitations & cautions
- No directional/velocity measurement—only motion presence via thermal change.
- Susceptible to sudden environmental temperature shifts, drafts, and moving heat sources (e.g., HVAC vents).
- False positives possible from direct sunlight, heating pipes, or moving curtains.
- Performance degraded through glass or behind insulating materials; IR-transparent openings required.
HW-416-B PIR Sensor — Datasheet-style Overview
Product: HW-416-B Passive Infrared (PIR) Motion Sensor
Purpose: Human/animal motion detection for low-power security, automation, and IoT applications
Project Ideas Using HW-416-B
- Automatic Room Lighting: Connect output to a relay controlling an LED strip or lamp.
- Security Alarm: Use with a buzzer and an ESP8266 to send email/SMS alerts.
- Human Counter (Single Trigger Mode): Count people entering a doorway (time delay set to 0.3s).
- Energy-Saving Display: Wake up an LCD or TFT screen only when someone is nearby.
- Pet Detector: Combine with a camera module and set sensitivity to high.