Blue Sea 9630 AC Analog Ammeter 0-50 Amperes AC [9630]9630 AC Analog Ammeter 2 3 4" Face, 0 50 Amperes AC Simple 2 wire connection Meter senses and powers from coil slipped over wire to be measured Includes AC current transformer 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