Metal Detectors: Model: MD-5008 Power: DC12V Signal frequency: 7kHz ... of MD series with lot of fun MD5008 Security Metal Detectors :Main features: 1,a balance between the lines, ... of metal the size, shape, weight, have great relations, in general, the greater area, the more, the corresponding detection ... * 60 cm by 0.5 cm * Aluminium buried in the dry soil of the measured results.specifications:1) Power ...