Review on ⚡️ DROK DC 4.5-100V LED Voltage Current Display - Digital Voltmeter Ammeter Multimeter Panel for Automotive Motor Battery - 0-50A Volt Tester Meter Amp Detector - Voltage Amperage Monitor Gauge by Daniel Pierce

Make sure the meter wiring and jumpers are done exactly as shown in the diagram on the back of the meter. plus to your charge and the V+ screw on the meter. Negative from the load to the large screw on one side of the shunt. The small screw on the same side as the Ain screw on the gauge. On the opposite side of the shunt is a large screw to the negative of the power supply and a small screw to the COM screw on the meter. After properly connecting the wires, I adjusted the calibration potentiometers on the meter's circuit board. to match my reading from my multimeter.