Adds 8 additional 2 Amp Form C relays to an M2, M8, Mx, M16 or MSP-8R. May not be installed in an M64. A total of 5 (4 if networked) REB8 Boards may be installed in all M2, M8, Mx, M16, and M64 DIGI*TRAC controllers. Removable connectors & status LEDs. UL Listed.
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