ZRD09 Pyroelectric Infrared Sensor Module Intelligent Thermal Sensing Human Body Sensing Switch Element
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Product Features:
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- 1. Pyroelectric PIR core + Fresnel lens for reliable human motion detection with low false triggers.
- 2. Wide 5–20 V DC input and ultra‑low static current (≤55 μA) for battery‑powered devices.
- 3. Repeatable/non‑repeatable trigger modes and adjustable time delay (5 s–10 min) for custom behavior.
- 4. Optional photo‑resistor interface for light‑activated sleep (e.g., off during daylight).
- 5. Built‑in voltage regulation and noise suppression for stable output in harsh environments.
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Applications:
- 1. Smart Home Switches/Lighting: Auto‑on/off for hallway lights, bathroom fans, and under‑cabinet lighting.
- 2. Security Alarms: Core detector for home/office burglar alarms and perimeter monitoring.
- 3. Industrial Automation: Hands‑free operation for assembly lines, conveyor belts, and access control.
- 4. Energy‑Saving Systems: Occupancy sensing to cut power to idle equipment (vending machines, displays).
- 5. Consumer Electronics: Automatic wake‑up for smart displays, toilets, and small appliances.
- 6. IoT Devices: Integration with Arduino/ESP32 for remote motion alerts via Wi‑Fi/Bluetooth.
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7. Compact form factor for seamless integration into switches, lamps, and sensors.
| Model | ZRD09 |
| Detection Principle | Pyroelectric infrared (PIR) with Fresnel lens |
| Target | Human body motion (8–14 μm infrared radiation) |
| Output Type | TTL level (high = detected, low = idle) |
| Working Voltage | 5–20 V DC |
| Static Current | ≤ 55 μA (@5 V) |
| Sensitivity | ≥ 2200 V/W |
| Noise Peak | < 70 mV |
| Sensing Distance | ≤ 7 m (typical, 25°C, 60% RH) |
| Sensing Angle | 110° (horizontal) |
| Trigger Modes | Repeatable (default) / Non‑repeatable (jumper‑selectable) |
| Time Delay (Adjustable) | 5 s – 600 s |
| Blocking Time | 3–4 s (default) |
| Operating Temp | -15°C – 60°C |
| Operating Humidity | ≤ 85% RH (no condensation) |
| Dimensions | 38 × 20 × 15 mm |
| Pin Pitch | 2.54 mm (3‑pin) |
| Lifespan | ≥ 5 years (typical in indoor environments) |
