监控干扰遥控器是真的吗？户外摄像头防拍？这不是智商税，而是妥妥的行骗 |

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Hidden Device Detector? Really? Best Hidden Camera Detectors? How to Block Neighbors Security Cameras? Do Signal Jammers Work on Cameras?

... https://www.youtube.com/watch?v=wrt51PiRcK8