Powerful Chip & Signal Enhancement Antenna, Easy to Detect Multiple Signal SourcesAll devices that are sending or receiving digital/analog signals can be detected, as radio waves, 2G/3G/4G/5G devices, UG magnetic field signal, GSM/CDMA/DECT cellular devices, frequency detection range 1MHz-8GHz. REMINDER: This anti spy detector detects the source of the signal rather than the device itself. So, for example, it cannot be a powered-off cell phone detector or uninitiated gps detector. Wide Applications. All-in-one RF Detector, Protects Your Privacy All The Time All HIDDEN DEVICES that can send or receive signals. The KINGDANS hidden devices detector is an ideal bug detector, hidden camera detector, spy camera detector, bug detectors anti-spy detector, hidden camera smoke detector. How to detect GPS tracker on car? A car tracking device detector.