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Metal detector non contact metal induction detection module

1. Overview

LC Metal detector module is used as a metal detector. When metal near, does it make a sound.

2. The function and characteristics
 ● Working voltage: DC 5V

3. Introduced the hardware and instructions
 ● The board size: 60.2*65.2mm
 ● The board function description:
Red line: connect to power positive
Black line : connect to power negative
Adjust the potentiometer, let the modules work normally.