Yamaha - Siren Marine 240V AC Shore Power Relay - SM-ACC-ACRE-240 - 6X8-85B52-00-00 Features: Never worry about shore power again! The 240VAC 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-240 6X8-85B52-00-00 - AC Relay, 240v AC