Underground Gold Searching Ghost Metal Detector

We are offering underground gold searching ghost metal detector.
[1]application
(1) the public security department of criminal search quickly.
(2) detect metal impurities in raw material, fuel and food.
(3) check mail, baggage and parcel of the metal items.
(4) inspection of underground pipes, cables.
(5) archaeology, exploration.
(6) found buried in the underground treasures of gold and silver and metal mineral scrap metal recycling.
[2]product specifications:
(1) the maximum detection depth: 15 meters
(2) detection methods: balance detection / recognition detection
(3) the main vibration frequency: 4.19mhz
(4) the signal frequency: 7.2khz
(5) power: dc9v (6 1.5vaa cells)
(6) the static current: 40ma
(7) low power: 7.2v+0.2v 7.2v-0.2v
[3]detection of note:
the indoor test and the matters needing attention:
(1) take off wear watches, rings and other jewelry, then the detector placed in wooden or plastic table.
(2) to adjust the angle of the probe disc surface and parallel to the ceiling. Note: do not test the detector in the building floor. Because most of the building floor are metal, they interfere with the test object, or completely confused signals.
(3) moving the material you want to test at a distance of about 5 centimeters place detecting disk samples (such as a ring of gold or money).