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1, the operation is simple and convenient.

2,  non-slip design, easy to work.

3, if having metal, both sides of the Alert light can glow red alarm

4, low battery consumption - standby current is zero, in working time is less than 1mA.

5, high accuracy and sensitivity - can accurately detect small metal objects (0.1g, or even smaller).

6, the battery voltage Tips --- system to detect power supply, battery failure, brownouts, when the voltage is insufficient ,