Magnetic Polarity Tester with ±5mT Sensitivity, One-Button Operation for Electric Motors/Coils/Magnets Assembly - LED N/S Detection Pen, Portable Gauss Meter with 10-Hour Battery
Special Features
★ Size: about 140 * 20 * 19mm,Sensitive area 6 * 3mm.
★ Induction value: 0.005 tesla = 5 mt, Sensitivity: ± 5mt.
★ Display: 2 LED display (green = S pole, red = N pole).
★ Use battery: 1X1.5V LR03 AAA battery （Not included）(continuous use time > 10 hours).
★ Service temperature: - 20℃ ~ + 80℃, Storage temperature: - 40℃ ~ + 150℃.
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