A21 Signal Input Switching Board with 4 Relays for Amplifier Board image-1

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A21 Signal Input Switching Board with 4 Relays for Amplifier Board

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Description

A21 Signal Input Switching Board

Feature A21 signal input switching board is new version and used to make high-level signal switching amplifier This board is with sealed yellow NAIS senior relay, dual quad with rectifier regulator section, then the use of a group of about 12V AC to. Package 1pc A21 Signal Input Switching Board