Wide Area Cellphone Detector with 5 Antennas
Here is a smartphone detector that lets you detect any cell phone call, text or data usage in a 20 meter radius. This Wide Area Cellphone Detector has 5 cell phone frequency antennas capable of detecting LATE 700, GSM 850, 3G/CDMA 850, GSM 1900, and CDMA 1900. The unit comes with an audible alarm with customizable message.
The device has a flashing sign to let you know when a cellphone is being used. The bad news? Something like this doesn’t come cheap.[where to get it]
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