Overview | PIR Motion Sensor | Adafruit Learning System PIR sensors allow you to sense motion, almost always used to detect whether a ... rectangular crystal in the center), which can detect levels of infrared radiation.
ADIO-PIR - 人體感測器- DC5~20V Arduino人體紅外線感測模組- 廣華 D-SUN PIR 人體紅外感應模塊是基於紅外線技術的自動控制產品。靈敏度高、可靠 性強、超低功耗，超低電壓工作模式。
