counter surveillance package

If you require GUARANTEED PROTECTION
against electronic telephone monitoring devices
and also require COMPLETE CONFIDENTIAL
PRIVACY in certain rooms and areas, we highly
recommend the Super-Sensitive

COMBINATION DETECTOR CSD-21.

Universally acknowledged as the finest single
piece of professional detection equipment
manufactured today, the world famous CSD-21 features an ultra High-Gain Amplifier stage
which makes possible the extreme sensitivity
and superior detection range.

And, the presence of any type of "bug" is
immediately indicated via LED sequencing and meter indications. This electronic marvel
actually picks up many Eavesdropping
Transmitters at ranges up to 25 ft! The CSD-
21 quickly "homes-in" on any eavesdropping
device and immediately pinpoints its location.

The CSD-21 will provide the absolute maximum degree of
protection possible today against all types of telephone

taps and room bugs. Specifically detailed, step by step
instructions assure easy operation and absolutely no
technical knowledge is required.

Any improper readings in either mode will immediately be
brought to your attention via sequential flashing LEDs,
conspicuous meter indications, or a combination of both.

Completely silent operation allows entirely covert "sweeps"
making it possible to introduce false information to reveal
the identity of the eavesdropper. Convenient output jack
also allows for input into any standard cassette recorder
and proves invaluable for the recording of any unidentified
sounds detected, including all intercepted audio.

Exclusive GSS proprietary circuitry contained in the
CSD-21 detects even the very latest sophisticated
Eavesdropping Devices including "Frequency
Hoppers" and "Burst Bugs" which are specifically
designed to deteat detection by shifting frequencies,
storing information and then releasing it in brief
bursts. Also features the unique Infinity Tap
Detector/Locator and a "LISTEN-IN" Mode which
allows you to monitor all audio.

Our Customers
Include:

Police agencies,

private investigators,

security firms,

and private individuals

in all 50 states

including the

L A Police Dept.,

U.S. Defense Dept.

and the

United Nations