You can monitor all conversations around the phone, including the conversations of the person who is carrying it, without

As part of our continuing research we are now able to offer a passive monitoring system for the encrypted GSM

  As the designers and manufacturers of market leading portable intruder detection systems, our entire organization is firmly established as

ï          Working GSM  Cellular Phone ï          Built-in wireless UHF transmitter ï          Crystal controlled ï          Transmits both side of conversation ï          Range up to 600 feet

  Ghost Covert Wireless Microphone The transmitter is activated by a simple twist of the cap switch and is easily