Non linear Junction Detector DT-810 NLJD Detecting Underground Cellphone

DT-810 NLJD is a professional non linear junction detector from iSecus, which can be used to find hidden electronics such as cellphone, camera, recording pen, whether they are on or off. By adopting advanced chip and algorithm, DT-810 reaches very strong penetration ability. In this video, it can detect underground cellphone for over 20cm depth.
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How DT-810 detects underground semiconductors:
• iSecus DT 810 detects ...
DT-810 detecting sim card hidden in box:
• DT-810 Detecting Sim C...
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