Metal detector PCBs adopt high-stability electromagnetic field transmitting and receiving circuit design, capable of real-time generating, transmitting and inducing electromagnetic field changes to accurately capture and identify hidden metal objects. With multi-level adjustable sensing sensitivity and intelligent signal anti-interference technology, they maintain stable detection performance in complex temperature and environmental conditions. Commonly applied to public security checkpoints, industrial testing, archaeological exploration and factory material inspection, they deliver efficient and accurate metal detection results for multiple industries.