Product Description

Pulic security criminal activity department fast searchsecurity checkin examination raw material, fuel food metal foreign matter In inspection mail, good package metal goodsInvestigate the underground pipeline, electronic cableArchaeology, prospecting Discovered hidden buries in the underground money treasure and the metal cultural relic.Uses the *2V5 number battery, the biggest detection depth may amount to3.5 meters Technical Specifications power Supply: 8pcs 1.5V Batteries in Series Emitting Frequency: 6.*9KHz Signal Frequency: **7KHz