AM312 Mini PIR Motion Sensor Module
The HW-740 PIR Motion Sensor Module is a compact passive infrared sensor based on the AM312 chipset, designed for reliable motion detection in low-power applications. It supports a wide operating voltage range (2.7VDC – 12VDC) and draws under 0.1 mA in standby, making it ideal for battery-powered and IoT devices. Its small PCB footprint (approximately 12mm × 25mm) and integrated digital signal processing simplify integration in space-constrained projects.
Features
- Detects motion via passive infrared (PIR) technology up to 5 meters.
- Consumes less than 0.1 mA in standby mode, suitable for low-power designs.
- Fixed output delay time of about 2 seconds upon detection.
- Operates across a wide voltage range from 2.7VDC to 12VDC.
- Provides a repeatable trigger mode: output remains high if continuous motion is detected.
- Compact PCB size (≈ 12 mm × 25 mm) with a small lens (≈ 5 mm diameter).
- Built-in digital signal processing and noise immunity for reliable performance.
Specifications
| Parameter | Details |
|---|---|
| Operating Voltage | 2.7VDC – 12VDC |
| Quiescent Current | < 0.1mA |
| Detection Range | 3 – 5 meters (optimal 0 – 3 m) |
| Detection Angle | ≤ 100° |
| Output Voltage | High: ≈ 3.3V, Low: 0V |
| Output Delay Time | 2 seconds |
| Trigger Mode | Repeatable |
| Operating Temperature | –20°C to +60°C |
| PCB Dimensions | 10mm × 8mm |
Applications
- Automatic lighting and smart home automation systems.
- Security and surveillance motion detection.
- Battery-powered IoT devices (e.g., ESP8266, ESP32 projects).
- Energy-saving sensors in portable electronics.
Package Contents
- 1x AM312 PIR Motion Sensor Module.
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