[Hot Item] Infrared Motion Sensor Wireless Alarm Doorbell
made-in-china.com
[Hot Item] Infrared Motion Sensor Wireless Alarm Doorbell
[Hot Item] Infrared Motion Sensor Wireless Alarm Doorbell
2019年4月9日
短视频
2.7K views · 13 reactions | How do motion sensor lights work? Those outdoor lamps that switch on when you walk by use passive infrared sensors. They detect tiny changes in infrared radiation when a warm body moves across their field of view. The sensor triggers a circuit that powers the light instantly. Engineers design them to ignore small fluctuations like wind or rain, so they only react to significant movement. A simple, brilliant mix of electronics and safety. | Electricalgram | Facebook
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what is the IR sensor 🙏🙏👍☺️ IR (Infrared) sensor detects infrared light,
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what is the IR sensor 🙏🙏👍☺️ IR (Infrared) sensor detects infrared light,
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8.9K views · 30 reactions | Infrared Motion Sensor Lamp Holder | HT Bazar | Facebook
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