Underground metal detector

AD-808 underground gold detector 1.Introduction This high performance unit harnesses the power of advanced technology provide with ground balance function to measure ground mineralization and adjust itself for optimum operation, addiction the metal type mode identify the detected subject in ferrous or non-ferrous metal enhance the detection depth &accuracy effectively. AD808 is easy to operate, in order to take full advantage & functions of metal detection, please carefully read this instruction thoughtfully.2. Application This unit besides for the military purpose, also including applications below:Security insepction, police quick searching, metal object detection on materail, foodstff, Metal object detection on mail, baggage, hunting buried pipe, cable, Relic& Mineral hunting, Cache treasure & mineral hunting.3. Mineralization reactionAll soil and sand is different, containing varying amounts of naturally occurring minerals. When using old-type metal detector,as the search coil sweeps above the ground which the soil /sand with complex form, it will occurs faults signals, this phenomenon is called Mineralization Reaction. AD808 auto balance and re-calibrated function eliminate the Mineralization Reaction.4. FeaturesMetal scan & Metal type mode switchableMetal & mineral detectionFerrous & Non-ferrous metal discriminationAuto calibration when turn onManual Eliminate MineralizationSpeaker indicationHeadphone jack optionLow battery indicationLED back light optionLCD displayLead wire disconnetion alarm5. SpecifictionMax. Detection depth: 6-8M (50*50*1.2CM aluminium board)Detection mode: Scan / Metal typePrincipal vibration frequency: 4.19MHzSignal frequency: 7.2KHzPower supply: DC9V(6*1.5V AA batteries)Stand-by current: 40MALow battery: 7.2V±0.2V