FiberLert is essentially a voltage detector-like tool from the electrical world that has been reinvented to work in the fiber world, a fiber optic tester that is hypersensitive to the presence of a live optical signal without physical contact. It is not only useful as a troubleshooting and polarity tool, but as a safety tool to verify disconnection prior to inspection with a direct-view inspection scope. It is easy to use with minimal training and is useful in so many ways.

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