0-400 Amp DC Analog Panel Meter, Shunt RequiredProduct Details:0-400 Amp DC Analog Panel Meter with 10 Amp DivisionsShunt Required: 50 mV / 400 Amp, Shunt NOT IncludedMeter is Labeled 0, 100, 200, 300 and 400 Amp DCPanel Meter Mounts in 2″ Diameter Round Hole.Dimensions: ~ 3.7″ (W) x 2.9″ (H) x Overall Depth: 1.55″Mounting Studs are ~ 2.5″ Center to Center Horizontal & VerticalMeter Input: Screw TerminalsIncludes: Mounting HardwareBocatech193-622-002