Blue Sea 8022 DC Analog Ammeter - 2-3/4 Face, 0-50 AMP DC [8022]8022 DC Analog Ammeter 2 3 4 Face, 0 50 AMP DC Shunt Type: External Features: Simple 2 wire connection Meter Senses Powers from same connection Includes DC shunt Backlit meter face WARNING: This product can expose you to chemicals including di(2 ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov. Owner's Manual (pdf)