Tele-Data Guard
 |
|
| Using the Tele-Data Guard will protect your telephone privacy. This small device recognizes changes in the phone line voltage, which could be a sign of phone tapping and eavesdropping. An indicator light comes on when the line is "clean". When the light goes out, press the red button and the Tele-Data Guard automatically disconnects all other phones/machines on that line. Simply connect the device between the telephone and the phone jack. It can also be used to better fax transmissions and credit card transactions. No power source or batteries required. |
