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FAQ_Knowledge
Lesson 1_What Is Infrared?
Lesson 2_Principle of Passive Infrared Sensor (PIR)
Lesson 3_Principle of Active Infrared Detector
Lesson 4_Why Quad Beams Sensor Can Be Used Farther and More Stable
Lesson 5_What is Single/ Four Channel Infrared Beam Sensor?
Lesson.6_The Principle of Magnetic Switch
Lesson 7_The priciple of glass sensor