AM312 Mini PIR Motion Sensor Module

From the shop's description

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. Documents AM312 Sensor Datasheet AM312 Sensor Manual PIR Sensors Arduino Library Example ESP32 Project