The ABB DSTC120 57520001-A is a connection and termination unit for asynchronous communication interfaces in legacy ABB Advant Master control systems. It provides the physical interface and signal termination required by compatible MasterPiece 200 and 200/1 control-system accessories. The DSTC120 57520001-A is an exact-match spare part for maintenance and lifecycle support and should be selected according to the installed controller, modem arrangement and mounting requirements.

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