MCDA1 Owner’s Manual _10 DISC_ MP3 _MARINE RECEIVER + CDC_ MCDA1 Safety Tips • This unit is designed to be operated only on +12 volt DC negative ground systems; it cannot be used on +24 volt or positive ground systems. • Although it is designed to be water resistant, the unit will leak if the enclosure is damaged or sub jected to high pressure spray. When considering a mounting location, effort should be made to POWER MP3 SW select an area that is least exposed to an outdoor environment. MODE ENTER MWR32 VOL BAND • Since extreme temperatures af...