Protect your telephone privacy
with the Tele-Data Guard. This small device detects
changes in the line voltage, which could indicate phone
tapping and eavesdropping. Indicator light is
illuminated when the line is "clean". If the light goes
out, simply press the red button and the Tele-Data Guard
will automatically disconnect all other phones/machines
on the line. Just plug the device in between the
telephone and the phone jack. Can also be used to ensure
better fax transmissions and credit card transactions.
No external batteries or power source required.