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RC/A 8.1 Room Controller Manual
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This document describes the ABB RC/A 8.1 room controller, a surface-mounted base unit that accommodates up to eight plug-in modules for controlling module functions and communication via an installation bus. It features automatic module detection, manual testing capability, optional 12 V DC auxiliary input for backup, and supports 230 V or 115 V AC supply in various phase configurations.
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