Indicate the signal directions and power in fiber,displays the relative core power.(Macro bends are the use of fiber-optic bending leak out when the weak optical signal).Some fiber cladding is too thick, or some light is not easy to leak out (for example 850/1300nm), so it's hard to measure. The easiest to measure wavelength is 1310 / 1550nm.If you want to measure accurate power, please choose a power meter.
Indicate the signal presence or absence(Live or dark fiber)
Efficiently identifies the traffic direction and frequency tone (270Hz, 1KHz, 2KHz) with audible warning
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Build in VFL can measure the distance is about 10-15 kilometers. Lifetime Friendly Customer Service, if have problem, pls contact us.
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Warranty
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