Doehler & Haass SD22 vehicle sound decoder PluX22 2.0A SX1 SX2 DCC MM DC AC. Version with 8-pin interface connector.For optional operation with a conventional DC controller, digital systems according to SelecTRIX 1 and 2 or according to the NMRA standard (DCC)Switching between analogue and digital operation takes place automaticallyIn digital operation, the last programmed one is used system used (it is not switched automatically!)SelecTRIX 1 31 speed steps, 100 addressesSelecTRIX 2 127 speed st

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