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The SM8 is an 8 zone, manual switching, ETS audio surveillance system which comes with an inbuilt speaker for optimal performance for the user. The SM8 features RCA standard jacks which are able to be connected to the tape recorder, it also comes with a tape monitor switch, level controls, in/out switches as well as being reverse polarity protected and fused. The SM8 can be switched between 2 modes and can be used for either independent live audio monitoring, or it can be used with compatible tape recorders for record/playback operation. The SM8 is easy to use and install for most applications which can save on time and money for the user.