IMSI-catcher (International Mobile Subscriber Identity-catcher) is an eavesdropping device which intercepts mobile phone data (phonecalls, location, etc.).
The SCJ1800 is a Selective Cellular Jammer composed of two complementing systems, the first, the SMJ1890 that provides the jamming capabilities. The second, the active cellular system that provides the ability to connect to the regular cellular network when jamming is in session. Get more info here!
The SMJ1890 was designed for blocking GSM cellular network and all kinds of cellular standards in the world. The SMJ1890 uses state-of-the-art technology for maximum performance.