PIR Motion Detector Archives - 适合您项目的 LoRaWAN 物联网技术

  • 什么是 PIR 运动探测器

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    PIR传感器是一种通过接收红外辐射来检测运动的设备. It detects a rapid change in infrared energy and emits a signal when there’s somebody going by the sensor. In this arti...

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