Review on 🔎 Stemedu 5PCS RCWL-0516 Motion Detection Sensor: Advanced Microwave Radar Module for Arduino ESP8266 Nodemcu Wemos - Ideal for Animal Detection, Long Range 5-7m, Outperforms HC-SR501 by Udders Sharma

I tried one of the panels and got the detection range it claimed. I have found that the board becomes "sensitized" and gets repeated detections at longer distances than the original detection. I tried running the board through an interior wall (drywall with no wiring in the joist). He seemed to have about the same range as when he was clean. This would be useful for covert intruder alarms when nothing is showing. I suspect it won't work through an outside wall, but haven't tried it. The board runs on around 3mA, which is slightly more than IR motion sensors, so larger batteries are needed for longer operation. . Interesting product!