Yamaha - Siren Marine 120V AC Shore Power Relay - SM-ACC-ACRE-120 - 6X8-85B51-00-00 Features: Never worry about shore power again! The 120VAC Shore Power Relay is used to detect the presence and loss of AC shore power The relay is meant to be hardwired directly to your AC distribution panel Compatible with the Siren 3 pro and Plus only M.P.N: SM-ACC-ACRE-120 6X8-85B51-00-00 - Relay, AC Shore Power