The device is a sensitive indicator of changes in the electric field caused by anomalies in the ground, cavities, different mineralization, availability metallic objects, ionizing radiation, etc. Device does not respond directly to metal objects, but only the change of the electric field caused by the mentioned reasons.
Features: Indication: - LEDs for positive and negative ions - Sound (speaker or headphone, not included)
Power: 9V (not included) Consumption: 20-40 mA Dimensions of the board: 79 x 67 mm
The kit contain: Assembled and tested board, connected potentiometers and telescopic antenna.