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The Series 6 provides a full set of advanced features in a craft-grade design. All Series 6 models include our SIGNALSHIELD™ circuit for the protection of digital/data circuits so you can test POTS service on DSL circuits without harming the data or being "locked out".
HD-630 Our top-of-the-line model with all of our standard features plus our SIGNALALERT™ circuit to provide an audio and visual alert, indicating the presence of digital signals and, an excellent speakerphone for "Hands-Free" operation.
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