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FAQ_Knowledge
| No | Subject | Date |
|---|---|---|
| 1 | Lesson 1_What Is Infrared? | 2021-07-30 |
| 2 | Lesson 2_Principle of Passive Infrared Sensor (PIR) | 2021-07-30 |
| 3 | Lesson 3_Principle of Active Infrared Detector | 2021-07-30 |
| 4 | Lesson 4_Why Quad Beams Sensor Can Be Used Farther and More Stable | 2021-07-30 |
| 5 | Lesson 5_What is Single/ Four Channel Infrared Beam Sensor? | 2021-07-30 |
| 6 | Lesson.6_The Principle of Magnetic Switch | 2021-07-30 |
| 7 | Lesson 7_The priciple of glass sensor | 2021-11-03 |