Multiple high sensitivity sensors installed for detecting Power line, Smart meter, Cell phone ... Detects 5G network signal and RF up to 10Ghz Built-in RF Spectrum analyzer and GQ RF Browser ...

We generally don’t highlight commercial products in FotW, but in the case of this substandard RF signal generator, we’ll make an exception. We suppose the fail-badge could be pinned on ...

It’s not so far-fetched though, while bugs and hidden cameras in for example an Airbnb may not have flashing LEDs, they still emit RF and can be detected with a signal strength meter.