Passive GSM Monitoring System



A combination of a laptop, the reception unit (the size depends on the desired channels) and the key decryption unit. Power supply and antenna are included in the package.

This system is expandable until up to 32 duplex- channels. Each reception unit disposes of 8 duplex-channels. Recording of all incoming conversations, as well as all text messages is possible.

The controller software allows data evaluation from the laptop’s hard disk at any time.

A localization of this passive system is impossible, because it does not emit any active signals. The surveillance of GSM telephone conversation is possible via handheld device as well as via the base station.


  • Receiver unit, Laptop computer with software, antenna.
  • Frequency ranges: 900/1800 or 850 or 1900 MHz
  • Power supply: inside 12 V DC, 110V – 230V power supply

Receiver Unit

  • Dimensions: 320 x 300 x 80 mm
  • Weight: 3,8 kg

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