Portable Magnetic Polarity Fields Tester Pole Detector Identifier LED Indicator

Description

Portable Magnetic Polarity Fields Tester Pole Detector Identifier LED Indicator
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Easily determine whether something is magnetic
Red and green LEDs distinguish North and South (red for "N", green for "S")
The tester alerts you with two color LED indicators; red lights for north, green for south
A loud buzzer pinpoints each pole's location
Practical pocket clip and pen style makes it easy to carry
Powered by 4 LR44 batteries which are included with the instrument