A terminal board for connecting a plurality of actuatable devices into a two-out-of-three logic arrangement. The terminal board is formed of an insulative base with a plurality of conductors disposed in a corresponding plurality of parallel channels formed in the base. Interconnecting strips are arranged transversely to the channels and connect the conductors in a predetermined arrangement. The terminal board is divided into three sections wherein each section comprises a grouping of terminals to be connected to a pair of actuatable devices actuated by a single sensor and each section has a separate cover.
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